Grade 2 Mental Math Practice
This worksheet helps second-grade students practice mental math strategies for addition and subtraction within 100.
Includes
Standards
Topics
Grade 2 Mental Math Practice
Name:
Date:
Score:
Read each question carefully and solve it using mental math. Try not to use paper or a calculator!
Fill in the blank with the correct answer.
1. 10 + 7 =
2. 20 + 5 =
3. 30 + 9 =
4. 15 + 3 =
5. 24 + 6 =
Fill in the blank with the correct answer.
1. 18 - 8 =
2. 25 - 5 =
3. 30 - 7 =
4. 12 - 4 =
5. 40 - 10 =
1. Which strategy would you use to solve 35 + 9 mentally?
Count by ones
Make a ten (35+5=40, 40+4=44)
Draw a picture
Use your fingers
2. Which strategy would you use to solve 50 - 8 mentally?
Count backward by ones
Subtract from a ten (50-10=40, 40+2=42)
Use a calculator
Ask a friend
Solve the following word problems using mental math.
1. Sarah had 12 cookies. She baked 8 more. How many cookies does Sarah have now?
2. Tom had 20 stickers. He gave away 6 stickers. How many stickers does Tom have left?
Use the number line to help you solve the problem.
1. Start at 10. Jump forward 5. Where do you land?
Answer:
2. Start at 20. Jump backward 7. Where do you land?
Answer:
Read each statement and circle True or False.
1. Adding 10 to a number always increases the tens digit by one.
True
False
2. Subtracting a small number is harder than adding it.
True
False
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