Number Lines — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Start at 35 and jump 20 to the right on the number line. Where do you land?
A) 45
B) 55
C) 25
D) 15
Jumping 20 right means adding 20, so 35 plus 20 is 55 on the number line.
2. Start at 80 and jump 30 to the left. Where do you land?
A) 40
B) 60
C) 50
D) 110
Jumping left means subtracting, so 80 minus 30 is 50 on the number line.
3. Start at 46 and hop forward 20. What is the end value?
A) 66
B) 26
C) 64
D) 56
Jumping forward 20 from 46 gives 46 plus 20, which is 66 on the number line.
4. Start at 72 and hop back 40. Where do you land?
A) 42
B) 22
C) 32
D) 112
Hopping back 40 means 72 minus 40, which is 32 on the number line.
Part B: Fill in the Blank
Write the correct answer on each line.
1. On a number line, 24 plus a jump of 15 lands at 39.
A jump of 15 means add 15, so 24 plus 15 equals 39 on the line.
2. Start at 60 and hop back 25. You land at 35.
Jumping back means subtract, so 60 minus 25 is 35 on the number line.
3. From 18, jumping forward 30 ends at 48.
A hop of 30 adds 30, so 18 plus 30 is 48 on the number line.
4. Start at 95 and hop back 40. You land at 55.
Hopping back 40 means 95 minus 40, which equals 55 on the line.
5. On a number line, 27 plus a jump of 23 lands at 50.
A jump of 23 adds 23, so 27 plus 23 equals 50 on the number line.