Number Line Addition & Subtraction — Answer Key
Part A: Trace the Words
Trace each word carefully by following the dotted lines.
1. back
2. less
3. minus
4. five
5. eight
6. zero
Part B: Fill in the Blank
Write the missing word or number on each line.
1. Start at 8. Jump back 3. Land on 5
From 8, three jumps back reach 5, so 8-3=5.
2. Start at 10. Jump back 4. Land on 6
Ten minus four jumps back is 6, so 10-4=6.
3. Start at 7. Jump back 2. Land on 5
From 7, two jumps back land on 5, so 7-2=5.
4. Start at 9. Jump back 5. Land on 4
Nine minus five jumps back is 4, so 9-5=4.
Part C: True or False?
Read each statement. Circle True or False.
1. Jumping back on a number line means subtracting.
True False
Backward jumps lower the value, which is subtraction.
2. Starting at 6 and jumping back 2 lands on 8.
True False
6 minus 2 jumps back lands on 4, not 8.
3. When you jump back, the landing number is smaller than the start.
True False
Backward jumps always reduce the start value.