Number Line Addition & Subtraction — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. Maya had 12 stickers and gave 5 away. Using a number line, where does she land?
A) 7
B) 8
C) 17
D) 6
Giving away means subtract, so 12 - 5 = 7, landing on 7 after jumping 5 left.
2. Leo has 4 marbles. He finds 6 more. Use a number line. Where does he land?
A) 11
B) 10
C) 2
D) 9
Finding more means add, so 4 + 6 = 10, and 10 is the correct landing spot.
3. Ella took 9 steps forward, then 3 steps back. Where does she end?
A) 12
B) 5
C) 6
D) 7
9 - 3 = 6, so after going forward 9 and back 3 she lands on 6.
4. Sam had 7 coins. He earned 8 more. Using a number line, where does he land?
A) 1
B) 14
C) 15
D) 16
Earning more means add, so 7 + 8 = 15 is the landing number on the line.
Part B: Fill in the Blank
Write the correct answer on each line.
1. Ben had 13 grapes and ate 4. He lands on 9 on the number line.
Eating means subtract, so 13 - 4 = 9, and the pencil lands on 9.
2. Ivy had 5 shells. She found 9 more. She lands on 14.
Finding more adds, so 5 + 9 = 14, and 14 is where she lands.
3. Tom jumped forward 10 steps then back 6. He ends on 4.
10 - 6 = 4, so he finishes on 4 after the two jumps.
4. Zoe had 8 crayons. She gave 2 away. She lands on 6.
Giving away subtracts, so 8 - 2 = 6 is where Zoe lands.
5. Max had 6 cards. He got 7 more. He lands on 13.
Getting more adds, so 6 + 7 = 13 is his landing spot.