Number Line Addition & Subtraction — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. Start at 5, jump 4 right, then 2 left. Land on 7.
First jump takes you to 9, second jump back 2 lands on 7.
2. Start at 3, jump 6 right, then 1 left. Land on 8.
3 + 6 = 9, and 9 - 1 = 8, so the final spot is 8.
3. Start at 10, jump 3 left, then 2 right. Land on 9.
Jump left to 7, then right to 9, ending on 9.
4. Start at 4, jump 5 right, then 3 right. Land on 12.
4 + 5 = 9, then 9 + 3 = 12, so the final landing is 12.
5. Start at 12, jump 4 left, then 5 left. Land on 3.
12 - 4 = 8, then 8 - 5 = 3, landing on 3.
6. Start at 7, jump 2 right, then 6 left. Land on 3.
7 + 2 = 9, then 9 - 6 = 3, ending on 3.
7. Start at 6, jump 4 right, then 4 left. Land on 6.
6 + 4 = 10, and 10 - 4 = 6, so you return to the start at 6.
8. Start at 2, jump 7 right, then 2 right. Land on 11.
2 + 7 = 9, and 9 + 2 = 11, for a total of 11.
9. Start at 15, jump 5 left, then 3 right. Land on 13.
First land on 10, then jump right 3 to finish on 13.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
5 right then 2 left from 6
→ 9
9
3 left then 4 left from 12
→ 5
5
6 right then 3 right from 4
→ 13
13
2 left then 5 right from 8
→ 11
11
Each two-step story moves you forward or back twice, and the right-hand numbers show each final landing spot after both jumps.