A challenging Grade 1 multiple-choice worksheet where first graders pick the correct sum for three-addend problems like 4+6+7 and 5+5+9. Four multiple-choice questions test whether students can apply the make-ten and doubles strategies flexibly. Five fill-in sums then ask for the final answer, pushing first graders to use the smartest strategy within 20, sharpening addition speed and accuracy for everyday Grade 1 math work at school and home.
Style:
Adding Three Numbers
Part A: Multiple Choice
Circle the best answer for each question.
1. What is 4 + 6 + 7?
A) 17
B) 16
C) 15
D) 14
2. What is 5 + 5 + 9?
A) 18
B) 17
C) 19
D) 20
3. What is 3 + 7 + 8?
A) 16
B) 17
C) 18
D) 19
4. What is 2 + 9 + 6?
A) 15
B) 16
C) 17
D) 18
Part B: Fill in the Blank
Write the correct answer on each line.
1. 6 + 4 + 8 = 18
2. 5 + 5 + 7 = 17
3. 3 + 3 + 9 = 15
4. 1 + 9 + 8 = 18
5. 4 + 4 + 6 = 14
Adding Three Numbers
★ Part A: Multiple Choice
Circle the best answer for each question.
1. What is 4 + 6 + 7?
A) 17
B) 16
C) 15
D) 14
2. What is 5 + 5 + 9?
A) 18
B) 17
C) 19
D) 20
3. What is 3 + 7 + 8?
A) 16
B) 17
C) 18
D) 19
4. What is 2 + 9 + 6?
A) 15
B) 16
C) 17
D) 18
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) 6 + 4 + 8 = 18
2) 5 + 5 + 7 = 17
3) 3 + 3 + 9 = 15
4) 1 + 9 + 8 = 18
5) 4 + 4 + 6 = 14
Ready to Practice?
Complete each section carefully.
9 Questions
12-18 minutes
Auto-graded
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