This problem aligns with CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a mass problem requiring conversion then addition. The problem asks for the total in grams. We need to convert units then combine quantities. A bag of apples weighs 2 kg and oranges weigh 1,500 g, and we need the total mass in grams. First convert the larger unit to the smaller unit: $2 , \text{kg} = 2 , \text{kg} \times 1,000 , \frac{\text{g}}{\text{kg}} = 2,000 , \text{g}$. Then perform the operation: $2,000 , \text{g} + 1,500 , \text{g} = 3,500 , \text{g}$. A common distractor like 3,000 g might come from forgetting to convert and adding 2 + 1,500 incorrectly or using wrong conversion factor. To help students solve measurement word problems: Step 1 - Identify what's being measured: Mass. Step 2 - Determine operation: Total/combine (add). Step 3 - Check units: Units don't match, so convert larger unit to smaller unit first ($2 , \text{kg} = 2,000 , \text{g}$). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Represent measurement quantities with bars or models showing parts and totals.

CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a time problem requiring conversion then addition. The problem asks for the total time. We need to convert units then solve. Marcus read for 1 hour 20 minutes, then read 35 minutes more, and we need the total time in minutes. First convert 1 hour to minutes: 1 hr × 60 min/hr = 60 min. Then add: 60 min + 20 min + 35 min = 115 min. A common distractor is forgetting to convert hours to minutes and adding 1 + 20 + 35 = 56, but not matching, or partial conversion like 60 min + 35 min = 95 min. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance? Time? Volume? Mass? Money? Step 2 - Determine operation: Total/combine (add). Difference/remaining (subtract). Equal groups/repeated (multiply). Share/split (divide). Step 3 - Check units: Do units match? If not, convert larger unit to smaller unit first (3 hours = 180 min). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. For time, remember 60 minutes = 1 hour, so can't add 45 min + 30 min = 75 min directly—must convert to 1 hr 15 min if needed.

CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a volume problem requiring conversion then division. The problem asks for the individual share. We need to convert units then solve. Chen pours 2 L of juice into 4 equal cups, and we need to find how many milliliters are in each cup. First convert 2 L to milliliters: 2 L × 1,000 mL/L = 2,000 mL. Then divide by the number of cups: 2,000 mL ÷ 4 = 500 mL. A common distractor is forgetting to convert units and dividing 2 L ÷ 4 = 0.5 L, then perhaps misinterpreting as 50 mL, or dividing incorrectly like 2,000 mL ÷ 8 = 250 mL. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance? Time? Volume? Mass? Money? Step 2 - Determine operation: Total/combine (add). Difference/remaining (subtract). Equal groups/repeated (multiply). Share/split (divide). Step 3 - Check units: Do units match? If not, convert larger unit to smaller unit first (2 L = 2,000 mL). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Represent measurement quantities with bars or models showing parts and totals.

This problem aligns with CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a money problem requiring addition then subtraction. The problem asks for the remaining amount. We need to combine quantities then find what's left. Yuki starts with $45.75 and buys items for $12.50 and $18.25, and we need to find how much money is left. First find total cost: $$12.50 + $18.25 = \$30.75$. Then subtract from starting amount: $\$45.75 - $30.75 = $15.00$. A common distractor like $30.75 might come from stopping after adding the costs and not completing the two-step problem by subtracting. To help students solve measurement word problems: Step 1 - Identify what's being measured: Money. Step 2 - Determine operation: Total (add) then remaining (subtract). Step 3 - Check units: Units match (all in dollars), so no conversion needed. Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. For money, remember decimal point and dollar sign ($45.75 means 45 dollars and 75 cents), and watch for incomplete two-step problems.

CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a money problem requiring multiplication. The problem asks for the total cost. We need to multiply equal amounts. Carlos buys 3 notebooks at $2.40 each, and we need the total cost in dollars. Multiply the price by the number of notebooks: $2.40 × 3 = $7.20. A common distractor is dividing instead of multiplying, like $2.40 ÷ 3 = $0.80 but not matching, or arithmetic errors with decimals like $2.40 × 2 = $4.80. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance? Time? Volume? Mass? Money? Step 2 - Determine operation: Total/combine (add). Difference/remaining (subtract). Equal groups/repeated (multiply). Share/split (divide). Step 3 - Check units: Do units match? If not, convert larger unit to smaller unit first ($5 = 500 cents). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. For money, remember decimal point and dollar sign ($45.75 means 45 dollars and 75 cents). Watch for: arithmetic errors with decimals, using wrong operation.

CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a distance problem requiring conversion then addition. The problem asks for the total distance. We need to convert units then solve. Jamal ran 2 km and then ran 750 m more, and we need the total distance in meters. First convert 2 km to meters: 2 km × 1,000 m/km = 2,000 m. Then add the distances: 2,000 m + 750 m = 2,750 m. A common distractor is subtracting instead of adding, such as 2,000 m - 750 m = 1,250 m, or making an arithmetic error like 2,000 m + 700 m = 2,700 m. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance? Time? Volume? Mass? Money? Step 2 - Determine operation: Total/combine (add). Difference/remaining (subtract). Equal groups/repeated (multiply). Share/split (divide). Step 3 - Check units: Do units match? If not, convert larger unit to smaller unit first (2 km = 2,000 m). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Use number line diagrams for distance, time, or measurement scales to visualize problems.

CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a mass problem requiring conversion then addition. The problem asks for the total mass. We need to convert units then solve. A bag has 3 kg of rice and another has 450 g, and we need the total mass in grams. First convert 3 kg to grams: $3 , \text{kg} \times 1,000 , \text{g/kg} = 3,000 , \text{g}$. Then add the masses: $3,000 , \text{g} + 450 , \text{g} = 3,450 , \text{g}$. A common distractor is adding without conversion, like $3 + 450 = 453$, but not matching options, or arithmetic errors like $3,000 , \text{g} + 45 , \text{g} = 3,045 , \text{g}$. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance? Time? Volume? Mass? Money? Step 2 - Determine operation: Total/combine (add). Difference/remaining (subtract). Equal groups/repeated (multiply). Share/split (divide). Step 3 - Check units: Do units match? If not, convert larger unit to smaller unit first ($3 , \text{kg} = 3,000 , \text{g}$). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Use number line diagrams for distance, time, or measurement scales to visualize problems.

CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a volume problem requiring conversion then subtraction. The problem asks for the difference. We need to convert units then solve. A recipe needs 1,200 mL of milk, and Amir has 1 L, so we need to find how many milliliters more are needed. First convert 1 L to milliliters: 1 L × 1,000 mL/L = 1,000 mL. Then subtract: 1,200 mL - 1,000 mL = 200 mL. A common distractor is adding instead of subtracting, like 1,200 mL + 1,000 mL = 2,200 mL, or forgetting conversion and doing 1,200 - 1 = 1,199 but not matching. Help students solve measurement word problems: Step 1 - Identify what's being measured: Distance? Time? Volume? Mass? Money? Step 2 - Determine operation: Total/combine (add). Difference/remaining (subtract). Equal groups/repeated (multiply). Share/split (divide). Step 3 - Check units: Do units match? If not, convert larger unit to smaller unit first (2 L = 2,000 mL). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Represent measurement quantities with bars or models showing parts and totals.

This problem aligns with CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a mass problem requiring conversion then subtraction. The problem asks for the remaining amount. We need to convert units then solve. Amir has 5,000 g of flour and uses 2 kg, and we need the grams left. First convert the larger unit to the smaller unit: 2 kg = 2 kg × 1,000 g/kg = 2,000 g. Then subtract: 5,000 g - 2,000 g = 3,000 g. A common distractor like 2,500 g fails because it might result from using the wrong operation, such as subtracting 2,500 instead of converting correctly. Help students solve measurement word problems: Step 1 - Identify what's being measured: Mass. Step 2 - Determine operation: Difference/remaining (subtract). Step 3 - Check units: Units don't match, so convert larger unit to smaller unit first (2 kg = 2,000 g). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. Watch for: forgetting to convert units, using wrong operation, arithmetic errors with decimals.

This problem aligns with CCSS.4.MD.2: Use the four operations to solve word problems involving distances, intervals of time, liquid volumes, masses of objects, and money, including problems involving simple fractions or decimals, and problems that require expressing measurements given in a larger unit in terms of a smaller unit. This is a time problem requiring subtraction, possibly with conversion. The problem asks for the difference in time. We need to find the interval between start and end times. The movie started at 2:15 PM and ended at 4:30 PM, and we need the duration in hours and minutes. From 2:15 PM to 4:15 PM is 2 hours, then add 15 more minutes to 4:30 PM, for a total of 2 hr 15 min. A common distractor like 2 hr 45 min might come from adding the minutes incorrectly or subtracting wrong, such as miscalculating the hour difference. To help students solve measurement word problems: Step 1 - Identify what's being measured: Time. Step 2 - Determine operation: Difference (subtract). Step 3 - Check units: Units in hours and minutes, convert if needed (e.g., borrow 60 min for subtraction). Step 4 - Solve and check: Perform calculation, include units in answer, check if answer is reasonable. For time, remember 60 minutes = 1 hour, so can't add 45 min + 30 min = 75 min directly—must convert to 1 hr 15 min; use a clock or number line to visualize.