Number Line Addition & Subtraction — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Start at 3, jump forward 5, land on 8. Which equation?
A) 3+5=8
B) 3-5=8
C) 5+3=2
D) 8-3=5
Starting at 3 and adding 5 forward jumps gives 3+5=8.
2. Start at 12, jump back 4, land on 8. Which equation?
A) 12+4=8
B) 12-4=8
C) 8-4=12
D) 4-12=8
Starting at 12 and subtracting 4 back jumps gives 12-4=8.
3. Start at 6, jump forward 7, land on 13. Which equation?
A) 6-7=13
B) 7-6=13
C) 6+7=13
D) 13+6=7
Six plus seven forward jumps equals 13, so 6+7=13.
4. Start at 17, jump back 8, land on 9. Which equation?
A) 17+8=9
B) 8-17=9
C) 17-8=9
D) 9-8=17
Seventeen minus eight back jumps equals 9, so 17-8=9.
Part B: Fill in the Blank
Write the correct answer on each line.
1. Jumps: start 4, forward 6, land 10. Equation: 4 + 6 = 10
Four plus six forward jumps equals 10.
2. Jumps: start 15, back 7, land 8. Equation: 15 - 7 = 8
Fifteen minus seven back jumps equals 8.
3. Jumps: start 9, forward 9, land 18. Equation: 9 + 9 = 18
Nine plus nine forward jumps equals 18.
4. Jumps: start 20, back 6, land 14. Equation: 20 - 6 = 14
Twenty minus six back jumps equals 14.
5. Jumps: start 5, forward 8, land 13. Equation: 5 + 8 = 13
Five plus eight forward jumps equals 13.