Grade 4 - Progress in Mathematics

Number Sense: Use a Number Line

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Halfway points can help you to find numbers

on a number line.

About where on each number line is 75?

75 is exactly halfway

between 70 and 80.

50 is the halfway point.

75 is exactly halfway

between 50 and 100.

About where on each number line is 142?

145 is the halfway point.

142 is between 140 and 145.

142 is closer to 140.

150 is the halfway point.

142 is between 100 and 150.

142 is much closer to 150.

Write the number that is halfway between

the two numbers.

1. 20; 30 2. 0; 50 3. 600; 700 4. 0; 200


2. 0; 500 6. 0; 80 7. 10; 70 8. 150; 200

Draw a number line to show the halfway point

between the two numbers.

9. 0; 10 10. 40; 50 11. 0; 60 12. 800; 900


10. 0; 1000 14. 510; 520 15. 1000; 2000 16. 0; 2000

70 75 80

50

75

0 100

145

142

140 150

150

142

100 200

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