Make each number sentence true by using >, <, or =. Use base-ten pieces to help you. Read each sentence to your partner after you complete it. Compare your answers and explain your thinking.

    1. 99 100
    2. 7099 799
    3. 432 1234
    4. 9806 9860
    5. 4512 4000 + 500 + 10 + 2
    6. 900 + 70 + 5 795
    7. 20 + 6 10 + 10 + 6
    8. 20 + 6 206
    9. 30 + 5 10 + 10 + 10 + 5
    10. 1999 2099
  1. Show or tell how you know that your sentence for Question 1J is true.
  2. Write the following groups of numbers in order from smallest to largest.
    1. 987, 978, 789
    2. 1023, 321, 123
    3. 555, 5055, 55
    4. 156, 6956, 6156

Check-In: Questions 4–8

For Questions 4–5, show the numbers in A and B using base-ten shorthand. Write a true number sentence in C using >, <, or =.

    1. 607
    2. 76
    3. 607 76
    1. 5612
    2. 6599
    3. 5612 6599
  1. Write a true number sentence for each using >, <, or =.
    1. 2345 3289
    2. 3029 3000 + 200 + 9
    3. 1874 1000 + 800 + 70 + 4
  2. Write each number in words. Use the examples on the Writing Numbers in Words page in the Reference section.
    1. 341
    2. 419
    3. 2984
    4. 1403
  3. Tara and Rosa are playing Spin, Place, and Read. Tara's number is 7591 and Rosa's number is 5971. Whose number is smaller? How do you know? Write a number sentence using the less than symbol to show which is smaller.