This challenging worksheet pushes first graders past basic facts into reasoning and missing-addend problems. Multiple-choice items include a frog catching 6 flies in the morning and 4 more at night, a question asking which sentence does NOT equal 8 (with options like 3 + 5 and 4 + 3), and Lily picking 2 flowers and then 5 more. Fill-in-the-blank equations like ___ + 3 = 8, 6 + ___ = 9, ___ + 7 = 7, and 4 + ___ = 10 demand backward thinking.
Working out the unknown addend trains children to see addition as a flexible relationship between numbers, an idea that underpins later subtraction strategies.
Style:
Addition Within 10
Part A: Multiple Choice
Circle the best answer for each question.
1. A frog catches 6 flies in the morning and 4 more at night. How many flies did it catch in all?
A) 9
B) 10
C) 8
D) 11
2. Which addition sentence does NOT equal 8?
A) 3 + 5
B) 6 + 2
C) 4 + 3
D) 1 + 7
3. Which two numbers add up to 7?
A) 2 + 6
B) 5 + 3
C) 3 + 4
D) 4 + 4
4. Lily picks 2 flowers, then picks 5 more. How many flowers does she have?
A) 6
B) 8
C) 9
D) 7
Part B: Fill in the Blank
Write the correct answer on each line.
1. 5 + 3 = 8
2. 6 + 3 = 9
3. 0 + 7 = 7
4. 4 + 6 = 10
5. 8 + 1 = 9
Addition Within 10
★ Part A: Multiple Choice
Circle the best answer for each question.
1. A frog catches 6 flies in the morning and 4 more at night. How many flies did it catch in all?
A) 9
B) 10
C) 8
D) 11
2. Which addition sentence does NOT equal 8?
A) 3 + 5
B) 6 + 2
C) 4 + 3
D) 1 + 7
3. Which two numbers add up to 7?
A) 2 + 6
B) 5 + 3
C) 3 + 4
D) 4 + 4
4. Lily picks 2 flowers, then picks 5 more. How many flowers does she have?
A) 6
B) 8
C) 9
D) 7
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) 5 + 3 = 8
2) 6 + 3 = 9
3) 0 + 7 = 7
4) 4 + 6 = 10
5) 8 + 1 = 9
Ready to Practice?
Complete each section carefully.
9 Questions
12-18 minutes
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