This question aligns with CCSS.4.MD.1, which involves knowing relative sizes of measurement units within one system, expressing measurements in a larger unit in terms of a smaller unit, and recording equivalents in a two-column table. To convert from a larger unit like kilometers to a smaller unit like meters, multiply by the conversion factor because it takes more of the smaller units to equal the same measurement, with $1 \text{ kilometer} = 1,000 \text{ meters}$. Here, a race is 3 kilometers long, and we need to convert that to meters using the relationship $1 \text{ km} = 1,000 \text{ m}$. The calculation is $3 \text{ km} \times 1,000 \text{ m/km} = 3,000 \text{ m}$, so the race is 3,000 meters long. A common distractor like 300 meters might come from dividing by 10 instead of multiplying or forgetting a zero, while others could result from using the wrong conversion factor or arithmetic errors. To help students remember, emphasize that converting from larger to smaller units means multiplying to get a bigger number, such as how 3 kilometers becomes 3,000 meters. Use real objects like maps to visualize distances and create conversion tables to spot patterns, like $1 \text{ km} = 1,000 \text{ m}$, $2 \text{ km} = 2,000 \text{ m}$, $3 \text{ km} = 3,000 \text{ m}$, and check reasonableness by ensuring the meter value is larger than the kilometer value.

This question aligns with CCSS.4.MD.1, which requires knowing relative sizes of measurement units within one system, expressing measurements in a larger unit in terms of a smaller unit, and recording equivalents in a two-column table. To convert from a larger unit like yards to a smaller unit like feet, multiply by the conversion factor because it takes more of the smaller units to equal the same measurement; specifically, 1 yard equals 3 feet. The football play gained 6 yards, so we convert to feet by multiplying 6 yards by 3 feet per yard. The calculation is 6 yd × 3 ft/yd = 18 ft, so the gain is 18 feet. A distractor like 12 feet might come from multiplying by 2 instead of 3, while 9 feet could result from dividing or confusing with inches. Emphasize that larger to smaller conversions mean multiplying for a bigger number, like 6 yards becoming 18 feet, and check reasonableness—feet should outnumber yards. Use a yardstick to show 3 ft = 1 yd, and create tables: 1 yd = 3 ft, 2 yd = 6 ft, up to 6 yd = 18 ft, to avoid mixing customary length units.

This question aligns with CCSS.4.MD.1, which requires knowing relative sizes of measurement units within one system, expressing measurements in a larger unit in terms of a smaller unit, and recording equivalents in a two-column table. To convert from a larger unit like kilometers to a smaller unit like meters, multiply by the conversion factor because it takes more of the smaller units to equal the same measurement; specifically, 1 kilometer equals 1,000 meters. The race is 2 kilometers long, so we convert to meters by multiplying 2 kilometers by 1,000 meters per kilometer. The calculation is 2 km × 1,000 m/km = 2,000 m, so the race is 2,000 meters long. Common distractors like 200 meters might occur from dividing instead of multiplying or using 100 as the factor, while 1,000 meters could be from forgetting to multiply by 2. Help students memorize that larger to smaller means multiply for more units, resulting in a bigger number like 2 km becoming 2,000 m, and always check if the answer makes sense—fewer kilometers should mean many more meters. Create conversion tables such as 1 km = 1,000 m, 2 km = 2,000 m, and use real-world examples like walking distances to internalize the metric system.

This question aligns with CCSS.4.MD.1, which requires knowing relative sizes of measurement units within one system, expressing measurements in a larger unit in terms of a smaller unit, and recording equivalents in a two-column table. To convert from a larger unit like kilograms to a smaller unit like grams, multiply by the conversion factor because it takes more of the smaller units to equal the same mass; specifically, 1 kilogram equals 1,000 grams. The bag of flour has a mass of 7 kilograms, and we need to convert this to grams using the relationship 1 kg = 1,000 g. The calculation is 7 kg × 1,000 g/kg = 7,000 g, so the bag has a mass of 7,000 grams. Common distractors include dividing (7 ÷ 1,000 = 0.007, not matching, but similar like 7 × 100 = 700 or 7 × 10,000 = 70,000 misplaced zeros), using the wrong factor like 100, or arithmetic errors. To help students remember, emphasize that converting from larger to smaller units means multiplying to get a bigger number, like how 7 kilograms becomes 7,000 grams. Use a scale to show 1,000 grams in a kilogram and create conversion tables to spot patterns, such as 1 kg = 1,000 g, 2 kg = 2,000 g, up to 7 kg = 7,000 g; always check reasonableness by ensuring the number increases for smaller units and memorize 1 kg = 1,000 g.

This question aligns with CCSS.4.MD.1, which involves knowing relative sizes of measurement units within one system, expressing measurements in a larger unit in terms of a smaller unit, and recording equivalents in a two-column table. To convert from a larger unit like pounds to a smaller unit like ounces, multiply by the conversion factor because it takes more of the smaller units to equal the same measurement, with 1 pound equaling 16 ounces. Here, Jamal’s backpack weighs 8 pounds, and we need to convert that to ounces using the relationship 1 lb = 16 oz. The calculation is 8 lb × 16 oz/lb = 128 oz, so the backpack weighs 128 ounces. A common distractor like 64 ounces might come from dividing by 2 instead of multiplying or using half the conversion factor, while others could result from arithmetic errors or confusing with other units. To help students remember, emphasize that converting from larger to smaller units means multiplying to get a bigger number, such as how 8 pounds becomes 128 ounces. Use real objects like a kitchen scale to show 16 ounces in a pound and create conversion tables to spot patterns, like 1 lb = 16 oz, 2 lb = 32 oz, up to 8 lb = 128 oz, and check reasonableness by ensuring the ounce value is larger than the pound value.

This question aligns with CCSS.4.MD.1, which requires knowing relative sizes of measurement units within one system, expressing measurements in a larger unit in terms of a smaller unit, and recording equivalents in a two-column table. To convert from a larger unit like minutes to a smaller unit like seconds, multiply by the conversion factor because it takes more of the smaller units to equal the same measurement; specifically, $1 \text{ minute} = 60 \text{ seconds}$. The song lasts 4 minutes, so we convert to seconds by multiplying 4 minutes by 60 seconds per minute. The calculation is $4 \text{ min} \times 60 \frac{\text{sec}}{\text{min}} = 240 \text{ sec}$, so the song is 240 seconds long. Distractors like 120 seconds might come from dividing by 2 or using half the time, while 400 seconds could be from multiplying by 100 incorrectly. Remind students that larger to smaller means multiply for more units, resulting in a larger number like 4 minutes becoming 240 seconds, and to confirm if it feels right—seconds accumulate quickly. Use a timer to demonstrate $60 \text{ sec} = 1 \text{ min}$, and build tables: $1 \text{ min} = 60 \text{ sec}$, $2 \text{ min} = 120 \text{ sec}$, $4 \text{ min} = 240 \text{ sec}$, watching for errors like confusing minutes with hours.

This question aligns with CCSS.4.MD.1, which requires knowing relative sizes of measurement units within one system, expressing measurements in a larger unit in terms of a smaller unit, and recording equivalents in a two-column table. To convert from a larger unit like hours to a smaller unit like minutes, multiply by the conversion factor because it takes more of the smaller units to equal the same time; specifically, 1 hour equals 60 minutes. Sofia practiced for 3 hours, and we need to convert this to minutes using the relationship $1 , \text{hr} = 60 , \text{min}$. The calculation is $3 , \text{hr} \times 60 , \frac{\text{min}}{\text{hr}} = 180 , \text{min}$, so she practiced for 180 minutes. Common distractors include adding ($3 + 60 = 63$), dividing ($3 \div 60 = 0.05$, not matching, but similar like $180 / 2 = 90$ halved), using the wrong factor like 30, or confusing with seconds. To help students remember, emphasize that converting from larger to smaller units means multiplying to get a bigger number, like how 3 hours becomes 180 minutes. Use a clock to show 60 minutes in an hour and create conversion tables to spot patterns, such as $1 , \text{hr} = 60 , \text{min}$, $2 , \text{hr} = 120 , \text{min}$, up to $3 , \text{hr} = 180 , \text{min}$; always check reasonableness by ensuring the number increases for smaller units.

This question aligns with CCSS.4.MD.1, which requires knowing relative sizes of measurement units within one system, expressing measurements in a larger unit in terms of a smaller unit, and recording equivalents in a two-column table. To convert from a larger unit like meters to a smaller unit like centimeters, multiply by the conversion factor because it takes more of the smaller units to equal the same measurement; specifically, 1 meter equals 100 centimeters. The ribbon is 5 meters long, so we convert to centimeters by multiplying 5 meters by 100 centimeters per meter. The calculation is 5 m × 100 cm/m = 500 cm, so the ribbon is 500 centimeters long. Distractors like 50 centimeters might result from dividing by 10 instead of multiplying by 100, or confusing with millimeters, while 5 centimeters could come from ignoring the conversion factor entirely. Encourage students to remember larger to smaller conversions by multiplying, yielding a larger number like 5 m becoming 500 cm, and to verify reasonableness—centimeters should outnumber meters significantly. Use a meter stick to show 100 cm = 1 m, and build tables: 1 m = 100 cm, 2 m = 200 cm, up to 5 m = 500 cm, watching for errors like using the wrong metric prefix.

This question aligns with CCSS.4.MD.1, which requires knowing relative sizes of measurement units within one system, expressing measurements in a larger unit in terms of a smaller unit, and recording equivalents in a two-column table. To convert from a larger unit like pounds to a smaller unit like ounces, multiply by the conversion factor because it takes more of the smaller units to equal the same weight; specifically, 1 pound equals 16 ounces. Jamal’s backpack weighs 5 pounds, and we need to convert this to ounces using the relationship 1 lb = 16 oz. The calculation is 5 lb × 16 oz/lb = 80 oz, so the backpack weighs 80 ounces. Common distractors include adding instead of multiplying (5 + 16 = 21), dividing (5 ÷ 16 ≈ 0.3125, not matching, but similar like 80/16=5 reversed), using the wrong factor like 10, or arithmetic errors. To help students remember, emphasize that converting from larger to smaller units means multiplying to get a bigger number, like how 5 pounds becomes 80 ounces. Use a kitchen scale to show 16 ounces in a pound and create conversion tables to see patterns, such as 1 lb = 16 oz, 2 lb = 32 oz, up to 5 lb = 80 oz; always check reasonableness by ensuring the number increases when going to smaller units.

This question aligns with CCSS.4.MD.1, which requires knowing relative sizes of measurement units within one system, expressing measurements in a larger unit in terms of a smaller unit, and recording equivalents in a two-column table. To convert from a larger unit like kilograms to a smaller unit like grams, multiply by the conversion factor because it takes more of the smaller units to equal the same measurement; specifically, 1 kilogram equals 1,000 grams. The bag of flour has a mass of 2 kilograms, so we convert to grams by multiplying 2 kilograms by 1,000 grams per kilogram. The calculation is 2 kg × 1,000 g/kg = 2,000 g, so the bag has 2,000 grams. Distractors like 200 grams might result from dividing by 10 or using the wrong factor, while 1,200 grams could be an arithmetic error like 2 × 600. Teach that converting larger to smaller involves multiplying for a larger number, such as 2 kg becoming 2,000 g, and verify by noting grams should be far more than kilograms. Use a scale to show 1,000 g = 1 kg, and build tables: 1 kg = 1,000 g, 2 kg = 2,000 g, to distinguish mass from other metric units.