Grade 1 Math Practice Test: Addition and Subtraction Within 20
- Addition and Subtraction Within 20
- 10 questions
- 15 minutes
Ten short questions on adding and subtracting numbers up to 20, including word problems and missing numbers. Tip: to add 8 + 5, make a ten first: 8 + 2 = 10, then add the 3 that is left.
Tap an option to mark your answer. You can change your mind, or tap the same option again to leave the question blank. The correct answers and explanations appear when you finish the test.Tap an option to answer; tap it again to leave the question blank.
Your result
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- 0 wrong
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Question 1
What is 8 + 5?
Correct answer: D
Make a ten: 8 + 2 = 10, and 3 more is 13. The answer 3 comes from subtracting instead of adding.
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Question 2
What is 15 - 7?
Correct answer: A
Count back from 15 to 10 (that is 5), then 2 more down to 8. 15 - 7 = 8. The answer 22 comes from adding.
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Question 3
Mia has 9 stickers. She gets 6 more.
How many stickers does Mia have now?
Correct answer: C
"Gets more" means add: 9 + 6 = 15. Think 9 + 1 = 10, then 5 more makes 15.
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Question 4
What number goes in the box?
7 + ☐ = 12
Correct answer: B
Count up from 7 to 12: 8, 9, 10, 11, 12. That is 5 steps, so 7 + 5 = 12. The answer 19 comes from adding 7 and 12.
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Question 5
There are 14 birds on a fence. 6 birds fly away.
How many birds are left?
Correct answer: D
"Fly away" means take away: 14 - 6 = 8. The answer 20 comes from adding the numbers.
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Question 6
What is 6 + 4 + 4?
Correct answer: C
6 + 4 makes a ten, and 10 + 4 = 14. The answer 10 forgets the last 4.
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Question 7
Which number sentence is true?
Correct answer: B
Both sides of 8 + 4 = 6 + 6 are 12, so it is true. 9 + 3 is 12, not 13; 5 + 5 is 10; 7 + 2 is 9.
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Question 8
You know that 9 + 7 = 16.
What is 16 - 7?
Correct answer: A
Addition and subtraction are related: if 9 + 7 = 16, then 16 - 7 = 9.
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Question 9
Sam has 12 toy cars. Leo has 8 toy cars.
How many more cars does Sam have than Leo?
Correct answer: A
Find the difference: 12 - 8 = 4. Count up from 8 to 12: 9, 10, 11, 12 is 4 steps. The answer 20 adds the cars instead.
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Question 10
Ana picks 3 red flowers, 5 yellow flowers and 7 pink flowers.
How many flowers does she pick?
Correct answer: D
Add all three: 3 + 7 = 10, then 10 + 5 = 15. The answer 8 only adds the red and yellow flowers.
Questions you leave blank are not counted as wrong.
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