HSPT Math : Problem Solving

Study concepts, example questions & explanations for HSPT Math

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Example Questions

Example Question #72 : Use Parentheses, Brackets, Or Braces In Numerical Expressions And Evaluate These Expressions: Ccss.Math.Content.5.Oa.A.1

Solve:

\(\displaystyle 3\times(14+2)\)

 

Possible Answers:

\(\displaystyle 60\)

\(\displaystyle 24\)

\(\displaystyle 48\)

\(\displaystyle 44\)

\(\displaystyle 27\)

Correct answer:

\(\displaystyle 48\)

Explanation:

\(\displaystyle 3\times(14+2)\)

When solving this problem, remember order of operations PEMDAS. The parentheses come first followed by the multiplication. 

\(\displaystyle 14+2=16\)

\(\displaystyle 3\times16=48\)

Example Question #192 : Problem Solving

Solve:

\(\displaystyle 4\times (27-19)\div8\)

 

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 6\)

\(\displaystyle 5\)

\(\displaystyle 4\)

\(\displaystyle 7\)

Correct answer:

\(\displaystyle 4\)

Explanation:

\(\displaystyle 4\times (27-19)\div8\)

When solving this problem, remember order of operations PEMDAS. The parentheses come first, followed by the multiplication, and then the division.

\(\displaystyle 27-19=8\)

\(\displaystyle 4\times8=32\)

\(\displaystyle 32\div8=4\) 

Example Question #73 : Use Parentheses, Brackets, Or Braces In Numerical Expressions And Evaluate These Expressions: Ccss.Math.Content.5.Oa.A.1

Solve:

\(\displaystyle 3\times(38-18)\)

 

Possible Answers:

\(\displaystyle 56\)

\(\displaystyle 46\)

\(\displaystyle 40\)

\(\displaystyle 52\)

\(\displaystyle 60\)

Correct answer:

\(\displaystyle 60\)

Explanation:

\(\displaystyle 3\times(38-18)\)

When solving this problem, remember order of operations PEMDAS. The parentheses come first followed by the multiplication. 

\(\displaystyle 38-18=20\)

\(\displaystyle 3\times20=60\)

Example Question #194 : Problem Solving

Solve:

\(\displaystyle 45+(18-4)\div2\)

 

Possible Answers:

\(\displaystyle 48\)

\(\displaystyle 52\)

\(\displaystyle 44\)

\(\displaystyle 56\)

\(\displaystyle 40\)

Correct answer:

\(\displaystyle 52\)

Explanation:

\(\displaystyle 45+(18-4)\div2\)

When solving this problem, remember order of operations PEMDAS. The parentheses come first, followed by the division, and then the addition. 

\(\displaystyle 18-4=14\)

\(\displaystyle 14\div2=7\)

\(\displaystyle 45+7=52\)

Example Question #81 : Use Parentheses, Brackets, Or Braces In Numerical Expressions And Evaluate These Expressions: Ccss.Math.Content.5.Oa.A.1

Solve:

\(\displaystyle 9\times(10-2)\)

 

Possible Answers:

\(\displaystyle 72\)

\(\displaystyle 79\)

\(\displaystyle 67\)

\(\displaystyle 81\)

\(\displaystyle 65\)

Correct answer:

\(\displaystyle 72\)

Explanation:

\(\displaystyle 9\times(10-2)\)

When solving this problem, remember order of operations PEMDAS. The parentheses come first followed by the multiplication. 

\(\displaystyle 10-2=8\)

\(\displaystyle 9\times8=72\)

Example Question #82 : Use Parentheses, Brackets, Or Braces In Numerical Expressions And Evaluate These Expressions: Ccss.Math.Content.5.Oa.A.1

Solve:

\(\displaystyle 84\div(79-67)\)

 

Possible Answers:

\(\displaystyle 14\)

\(\displaystyle 12\)

\(\displaystyle 6\)

\(\displaystyle 7\)

\(\displaystyle 9\)

Correct answer:

\(\displaystyle 7\)

Explanation:

\(\displaystyle 84\div(79-67)\)

When solving this problem, remember order of operations PEMDAS. The parentheses come first followed by the division. 

\(\displaystyle 79-67=12\)

\(\displaystyle 84\div12=7\)

Example Question #197 : Problem Solving

Solve:

\(\displaystyle 8+(45-37)\times 11\)

 

Possible Answers:

\(\displaystyle 96\)

\(\displaystyle 80\)

\(\displaystyle 94\)

\(\displaystyle 76\)

\(\displaystyle 88\)

Correct answer:

\(\displaystyle 96\)

Explanation:

\(\displaystyle 8+(45-37)\times 11\)

When solving this problem, remember order of operations PEMDAS. The parentheses come first, followed by the multiplication, and then the addition. 

\(\displaystyle 45-37=8\)

\(\displaystyle 8\times11=88\)

\(\displaystyle 8+88=96\)

Example Question #83 : Use Parentheses, Brackets, Or Braces In Numerical Expressions And Evaluate These Expressions: Ccss.Math.Content.5.Oa.A.1

Solve:

\(\displaystyle 18\div(5-2)\)

 

Possible Answers:

\(\displaystyle 6\)

\(\displaystyle 14\)

\(\displaystyle 8\)

\(\displaystyle 9\)

\(\displaystyle 12\)

Correct answer:

\(\displaystyle 6\)

Explanation:

\(\displaystyle 18\div(5-2)\)

When solving this problem, remember order of operations PEMDAS. The parentheses come first followed by the division. 

\(\displaystyle 5-2=3\)

\(\displaystyle 18\div3=6\)

Example Question #199 : Problem Solving

Solve:

\(\displaystyle 16+3\times9+(42-10)\)

 

Possible Answers:

\(\displaystyle 82\)

\(\displaystyle 33\)

\(\displaystyle 75\)

\(\displaystyle 90\)

\(\displaystyle 48\)

Correct answer:

\(\displaystyle 75\)

Explanation:

\(\displaystyle 16+3\times9+(42-10)\)

When solving this problem, remember order of operations PEMDAS. The parentheses come first, followed by the multiplication, and then addition. 

\(\displaystyle 42-10=32\)

\(\displaystyle 3\times9=27\)

\(\displaystyle 16+27+32=75\)

Example Question #1 : Word Problems

Mark is three times as old as his son Brian. In ten years, Mark will be \(\displaystyle 43\) years old. In how many years will Mark be twice as old as Brian? 

Possible Answers:

\(\displaystyle 22\)

\(\displaystyle 20\)

\(\displaystyle 11\)

\(\displaystyle 17\)

\(\displaystyle 13\)

Correct answer:

\(\displaystyle 11\)

Explanation:

In ten years, Mark will be \(\displaystyle 43\) years old, so Mark is \(\displaystyle 43-10 = 33\) years old now, and Brian is one-third of this, or \(\displaystyle 33 \div 3 = 11\) years old. 

Let \(\displaystyle N\) be the number of years in which Mark will be twice Brian's age. Then Brian will be \(\displaystyle N + 11\), and Mark will be \(\displaystyle N + 33\). Since Mark will be twice Brian's age, we can set up and solve the equation:

\(\displaystyle 2 (N + 11) = N + 33\)

\(\displaystyle 2N + 22 = N + 33\)

\(\displaystyle 2N + 22-N - 22 = N + 33 -N - 22\)

\(\displaystyle N = 11\)

Mark will be twice Brian's age in \(\displaystyle 11\) years.

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