Unit 4 Contents

Check-In: Questions 11–14

11. Tell whether the number sentences below are true.
1. 5764 = 5000 + 600 + 70 + 4
2. (3 100) + 7 + (2 10) = 327
12. Draw a number line to show your answer to Question 11B is correct.
13. Replace the letter with a number to make each number sentence true.
1. 1000 = 800 + n
2. 1000 = 374 + 6 + 20 + n
3. 1000 = 374 + 600 + 30 − n
4. 1000 = 101 + 9 + 90 + n
5. 1000 = 499 + n + 500
14. Draw a number line to show that your answer to Question 13C is correct.

Choose problems on the Number Lines and Number Sentences pages in the Student Activity Book to practice showing different partitions of a number and finding the unknown with number lines.