3rd Grade Number Lines Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 3rd Grade place value worksheet.
3rd Grade Number Lines Worksheet — Level 2 — Practice Set 2 — Answers
First find how much each space is worth: (end − start) ÷ number of spaces.
1.A number line goes from 100 to 225 and is split into 5 equal spaces. The arrow is 2 spaces along from 100. What number does the arrow point to?
Answer: 150
- Each space is (225 − 100) ÷ 5 = 25
- 100 + 2 × 25 = 150
2.A number line goes from 700 to 1,200 and is split into 10 equal spaces. The arrow is 4 spaces along from 700. What number does the arrow point to?
Answer: 900
- Each space is (1,200 − 700) ÷ 10 = 50
- 700 + 4 × 50 = 900
3.What number is halfway between 140 and 640?
Answer: 390
- 640 − 140 = 500; half of that is 250
- 140 + 250 = 390
4.A number line goes from 200 to 450 and is split into 5 equal spaces. The arrow is 3 spaces along from 200. What number does the arrow point to?
Answer: 350
- Each space is (450 − 200) ÷ 5 = 50
- 200 + 3 × 50 = 350
5.A number line goes from 8,000 to 10,500 and is split into 10 equal spaces. The arrow is 5 spaces along from 8,000. What number does the arrow point to?
Answer: 9,250
- Each space is (10,500 − 8,000) ÷ 10 = 250
- 8,000 + 5 × 250 = 9,250
6.What number is halfway between 90 and 190?
Answer: 140
- 190 − 90 = 100; half of that is 50
- 90 + 50 = 140
7.A number line goes from 300 to 400 and is split into 5 equal spaces. The arrow is 1 space along from 300. What number does the arrow point to?
Answer: 320
- Each space is (400 − 300) ÷ 5 = 20
- 300 + 1 × 20 = 320
8.A number line goes from 900 to 1,400 and is split into 5 equal spaces. The arrow is 4 spaces along from 900. What number does the arrow point to?
Answer: 1,300
- Each space is (1,400 − 900) ÷ 5 = 100
- 900 + 4 × 100 = 1,300
9.What number is halfway between 10 and 430?
Answer: 220
- 430 − 10 = 420; half of that is 210
- 10 + 210 = 220
10.A number line goes from 100 to 350 and is split into 10 equal spaces. The arrow is 5 spaces along from 100. What number does the arrow point to?
Answer: 225
- Each space is (350 − 100) ÷ 10 = 25
- 100 + 5 × 25 = 225
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.