MENTAL MATH QUIZ 3:8 - 3rd Grade Mental Math - Quiz & Answers

Oct 22, 2026

Uploaded by Marglet

Mental math quiz for 3rd grade covering arithmetic, factors, rounding, measurement, time, and word problems. Tasks include division and addition, identifying a 3D shape as a square pyramid and counting its faces, simplifying expressions, comparing products, solving “double and add one” number logic, finding which number is not a factor of 12, and rounding 724 to the nearest 10. Includes scenario problems about temperature change, cooking start time, money remaining, and perimeter of a square.

LanguageEnglish

CategoryExam

FormatPDF

Pages3

Reading Time8 min

AccessFree to download

Mental Math Quiz 3:8

Questions 1-16

Answer Key

MENTAL MATH QUIZ 3:8 | 1) 30 ÷ 6 | | | | | | --- | --- | --- | --- | --- | | 2) 3000 + 500 + 8 | | | | | | What is this 3d shape called?
3) | | | | | | 4) How many faces does the shape above have? | | | | | | 5) 5 + = 1 | | | | | | 6) How much more is 7 x 6 than 5 x 6? | | | | | | 7) What is the difference between double 12 and half of 40? | | | | | | 8) | Which of these numbers is not a factor of 12?
2 6 3 10 4 1 | | | | | 9) Round 724 to the nearest 10. | | | | | | The temperature is 72°F. It falls by 15 degrees at night.
10) What is the temperature now? | | | | | | 11) | A chicken needs cooking for 2 hours 20 minutes. It needs to be cooked at 1pm. What time do I need to start cooking it? | | | | | 12) I have $10. I spend $4.50. How much money do I have now? | | | | | | 13) The date is August 3. What was the date a week ago? | | | | | | 14) | I am a square with sides length 3 inches.
What is my perimeter? | | | | | 15) | I think of a number. I double it and add one. The answer is 17. What was my number? | | | | | 16) 16 + = 5 x 5 | | | | | MENTAL MATH QUIZ 3:8 ANSWERS | 1) 30 ÷ 6 | | | 5 | | --- | --- | --- | --- | | 2) 3000 + 500 + 8 | | | 3508 | | What is this 3d shape called?
3) | | | square pyramid (or squarebased pyramid) | | 4) How many faces does the shape above have? | | | 5 | | 5) 5 + = 1 | | | 3/5 | | 6) How much more is 7 x 6 than 5 x 6? | | | 12 | | 7) What is the difference between double 12 and half of 40? | | | 4 | | 8) | Which of these numbers is not a factor of 12?
2 6 3 10 4 1 | | 10 | | 9) Round 724 to the nearest 10. | | | 720 | | The temperature is 72°F.
10) It falls by 15 degrees at night.
What is the temperature now? | | | 57°F | | 11) | A chicken needs cooking for 2 hours 20 minutes. It needs to be cooked at 1pm. What time do I need to start cooking it? | | 10:40am | | 12) I have $10. I spend $4.50. How much money do I have now? | | | $5.50 | | 13) The date is August 3. What was the date a week ago? | | | July 27 | | 14) | I am a square with sides length 3 inches.
What is my perimeter? | | 12 inches | | 15) | I think of a number. I double it and add one. The answer is 17. What was my number? | | 8 | | 16) 16 + = 5 x 5 | | | 9 |

FAQs

What topics are included in the Mental Math Quiz 3:8?

It covers basic operations, factors, rounding to the nearest 10, simple geometry (3D shape identification and number of faces), and multi-step word problems involving temperature, time, money, and perimeter.

Which 3D shape is referenced in question 3?

The answers section identifies it as a square pyramid (squarebased pyramid).

What is the answer to rounding 724 to the nearest 10 (question 9)?

The answer is 720.

Oct 22, 2026

Uploaded by Marglet