Hard worksheet two offers varied subtraction contexts and challenging facts up to 20. Four multiple-choice questions include a crayon word problem, a true-number-sentence check, and a fact-family question asking which subtraction fact follows from 7 + 8 = 15. Five fill-in-the-blank problems like '___ - 8 = 7' and '18 - ___ = 9' demand careful reasoning about which part of the equation is missing, giving first graders a strong push toward fluent, flexible subtraction thinking.
Style:
Subtraction Within 20
Part A: Multiple Choice
Circle the correct answer for each question.
1. A box has 16 crayons. You take out 9. How many are left in the box?
A) 5
B) 6
C) 7
D) 8
2. Which number sentence is true?
A) 19 - 8 = 10
B) 17 - 9 = 8
C) 20 - 7 = 14
D) 16 - 5 = 10
3. If you know 7 + 8 = 15, which subtraction fact can you also know?
A) 15 - 6 = 9
B) 15 - 7 = 8
C) 15 - 9 = 6
D) 15 - 5 = 10
4. There were 20 balloons. Some popped. Now there are 13. How many popped?
A) 5
B) 6
C) 7
D) 8
Part B: Fill in the Missing Number
Write the missing number to complete each number sentence.
1. 15 - 8 = 7
2. 18 - 9 = 9
3. 17 - 6 = 11
4. 20 - 15 = 5
5. 13 - 9 = 4
Subtraction Within 20
★ Part A: Multiple Choice
Circle the correct answer for each question.
1. A box has 16 crayons. You take out 9. How many are left in the box?
A) 5
B) 6
C) 7
D) 8
2. Which number sentence is true?
A) 19 - 8 = 10
B) 17 - 9 = 8
C) 20 - 7 = 14
D) 16 - 5 = 10
3. If you know 7 + 8 = 15, which subtraction fact can you also know?
A) 15 - 6 = 9
B) 15 - 7 = 8
C) 15 - 9 = 6
D) 15 - 5 = 10
4. There were 20 balloons. Some popped. Now there are 13. How many popped?
A) 5
B) 6
C) 7
D) 8
★ Part B: Fill in the Missing Number
Write the missing number to complete each number sentence.
1) 15 - 8 = 7
2) 18 - 9 = 9
3) 17 - 6 = 11
4) 20 - 15 = 5
5) 13 - 9 = 4
Ready to Practice?
For Part A, circle the correct answer. For Part B, write the missing number on the line.
9 Questions
15-20 minutes
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