This hard first-grade worksheet pushes children to apply subtraction strategies and reason about facts within 20. Four multiple-choice questions include computation like 'What is 18 - 9?', a sticker word problem, and a fact-family question linking addition and subtraction. Five fill-in-the-blank items such as '17 - ___ = 9' and '___ - 6 = 8' challenge learners to find missing minuends and subtrahends, strengthening algebraic thinking that prepares them for second-grade work.
Style:
Subtraction Within 20
Part A: Multiple Choice
Circle the correct answer for each question.
1. What is 18 - 9?
A) 7
B) 8
C) 9
D) 10
2. Mia had 15 stickers. She gave away 7. How many does she have left?
A) 6
B) 7
C) 8
D) 9
3. Which subtraction fact belongs to the same family as 9 + 4 = 13?
A) 13 - 4 = 9
B) 13 - 5 = 8
C) 13 - 3 = 10
D) 13 - 6 = 7
4. What number makes this true? 20 - ___ = 11
A) 7
B) 8
C) 9
D) 10
Part B: Fill in the Missing Number
Write the missing number to complete each number sentence.
1. 17 - 8 = 9
2. 14 - 6 = 8
3. 19 - 8 = 11
4. 13 - 7 = 6
5. 20 - 6 = 14
Subtraction Within 20
★ Part A: Multiple Choice
Circle the correct answer for each question.
1. What is 18 - 9?
A) 7
B) 8
C) 9
D) 10
2. Mia had 15 stickers. She gave away 7. How many does she have left?
A) 6
B) 7
C) 8
D) 9
3. Which subtraction fact belongs to the same family as 9 + 4 = 13?
A) 13 - 4 = 9
B) 13 - 5 = 8
C) 13 - 3 = 10
D) 13 - 6 = 7
4. What number makes this true? 20 - ___ = 11
A) 7
B) 8
C) 9
D) 10
★ Part B: Fill in the Missing Number
Write the missing number to complete each number sentence.
1) 17 - 8 = 9
2) 14 - 6 = 8
3) 19 - 8 = 11
4) 13 - 7 = 6
5) 20 - 6 = 14
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
Auto-graded
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