This Grade 1 worksheet teaches the counting-on strategy for adding three numbers. First graders trace math words like start, count, jump, and skip, then fill in sums by starting at the biggest addend and counting up. Three true or false questions reinforce why starting big means fewer steps. Perfect for students building early fluency with three-addend addition up to 10.
Style:
Adding Three Numbers
Part A: Trace the Words
Trace each word carefully by following the dotted lines.
1. start
2. count
3. next
4. jump
5. skip
6. more
Part B: Fill in the Blank
Write the missing word or number on each line.
1. Start at 4, count on 2 and 1. 4 + 2 + 1 = 7
2. Start at 5. Count on 3 and 1. 5 + 3 + 1 = 9
3. Start at 6. Count on 2 and 2. 6 + 2 + 2 = 10
4. Start at 7. Count on 1 and 2. 7 + 1 + 2 = 10
Part C: True or False?
Read each statement. Circle True or False.
1. To count on, we should start at the biggest number.
True False
2. 5 + 2 + 1 is the same as starting at 5 and counting 3 more.
True False
3. To add 3 + 1 + 6, we should start at 1.
True False
Adding Three Numbers
★ Part A: Trace the Words
Trace each word carefully by following the dotted lines.
1) start
2) count
3) next
4) jump
5) skip
6) more
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) Start at 4, count on 2 and 1. 4 + 2 + 1 = 7
2) Start at 5. Count on 3 and 1. 5 + 3 + 1 = 9
3) Start at 6. Count on 2 and 2. 6 + 2 + 2 = 10
4) Start at 7. Count on 1 and 2. 7 + 1 + 2 = 10
★ Part C: True or False?
Read each statement. Circle True or False.
1) To count on, we should start at the biggest number.
True
False
2) 5 + 2 + 1 is the same as starting at 5 and counting 3 more.
True
False
3) To add 3 + 1 + 6, we should start at 1.
True
False
Ready to Practice?
Complete each section carefully.
13 Questions
15-20 minutes
Auto-graded
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