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Grade 3 Mental Math Practice

A worksheet to practice mental math skills for 3rd graders, focusing on addition, subtraction, multiplication, and number patterns.

Grade 3 Math Number SenseMental Math
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Includes

Fill in the BlanksMultiple Choice2 Short AnswerTrue / False

Standards

CCSS.MATH.CONTENT.3.NBT.A.2CCSS.MATH.CONTENT.3.OA.A.1
7 sections · Free to use · Printable
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Grade 3 Mental Math Practice

Name:

Date:

Score:

Read each question carefully and answer as quickly as you can without using a calculator. Try to do the calculations in your head!

1. 30 + 50 =  

2. 70 - 20 =  

3. 15 + 8 =  

4. 23 - 7 =  

5. 45 + 10 + 5 =  

6. What is 4 groups of 3?

a

7

b

12

c

10

d

1

7. Which number completes the equation: 5 x   = 25?

a

4

b

6

c

5

d

10

8. What are the next two numbers in the pattern: 2, 4, 6, 8,  ,  ?

9. Look at the number line below. What number is indicated by the star?

01020304050

10. 6 x 2 = 12

T

True

F

False

11. 100 - 30 = 80

T

True

F

False

12. Sarah has 15 apples. She gives 7 apples to her friend. How many apples does Sarah have left?

13. A baker bakes 6 trays of cookies, with 5 cookies on each tray. How many cookies did the baker bake in all?