Number Line Addition & Subtraction — Answer Key
Part A: Trace the Words
Trace each word carefully by following the dotted lines.
1. equals
2. sum
3. write
4. plus
5. total
6. minus
Part B: Fill in the Blank
Write the missing word or number on each line.
1. Start at 4, jump 3 right. Write: 4 + 3 = 7.
Jumping right is adding, and 4 + 3 lands on 7 on the number line.
2. Start at 10, jump 4 left. Write: 10 - 4 = 6.
Jumping left is subtracting, and 10 - 4 lands on 6.
3. Start at 2, jump 5 right. The equation is 2 + 5 = 7.
Right-hand jumps add, so 2 plus 5 gives a landing spot of 7.
4. Start at 8, jump 3 left. The equation is 8 - 3 = 5.
Jumping 3 left from 8 lands on 5, so the missing jump number is 3.
Part C: True or False?
Read each statement. Circle True or False.
1. Start at 6, jump 2 right matches the equation 6 + 2 = 8.
True False
Jumping 2 right from 6 lands on 8, so 6 + 2 = 8 is the matching fact.
2. Start at 7, jump 4 left matches the equation 7 + 4 = 11.
True False
Left jumps subtract, so this should be 7 - 4 = 3, not 7 + 4 = 11.
3. A jump to the left is written with a minus sign.
True False
Left jumps mean the number gets smaller, which is written as subtraction with a minus sign.