Show:
Math 100
Math 200
Math 300
100

Which equation matches the place-value blocks?

  • 32 + 24 = 56
  • 22 + 24 = 46
  • 34 + 24 = 58
  • 42 + 34 = 76

42 + 34 = 76

100

Which place-value blocks show how to find 30 + 8?


100

Which equation matches the place-value blocks?
Choose all that apply.

  • 50 + 20 = 70
  • 5 tens + 2 tens = 7 tens
  • 50 + 10 = 60
  • 4 tens + 2 tens = 6 tens
  • 5 tens + 1 ten = 6 tens
  • 40 + 20 = 60
  • 50 + 20 = 70
  • 5 tens + 2 tens = 7 tens
200

Use the part of the hundred chart to add. Explain how you found your answer.

32 + 20 = ______

  • 22; I started at 32 and then moved to the row containing the twenties.
  • 50; I started at 30 and then added 2 tens.
  • 52; I started at 32 and then added 2 tens
  • 54; I started at 32 and then added 2 tens and 2 ones.

52; I started at 32 and then added 2 tens

200

30 + 8 =

38

200

1 + 10 =

47 + 10 =

23 + 10 =

7 + 10 =

77 + 10 =

1 + 10 = 11

47 + 10 = 57

23 + 10 =33

7 + 10 = 17

77 + 10 = 87

300

Choose the correct number to complete the equation.

30 + 60 = ____

90

300

Use the part of the hundred chart to solve the problem. Explain how you found your answer.



10 + 38 = ____

  • 28; I started at 38 and added 1 ten.
  • 39; I started at 38 and added 1 one.
  • 48; I started at 38 and added 1 ten.
  • 50; I started at 38 and moved to the end of the next row of the chart.

48; I started at 38 and added 1 ten.

300

____ + 50 = 70

20

400

Solve the problem.

38 + 24 = ___

Part A
Can you make a 10? Explain.

  • Yes, because 8 ones plus 4 ones is 12 ones.
  • Yes, because 3 ones plus 8 ones is 11 ones.
  • No, because 3 ones plus 2 ones is 5 ones.
  • No, because 2 ones plus 4 ones is 6 ones.

Yes, because 8 ones plus 4 ones is 12 ones.

400

10 + ____ = 80

70

400

Find the sum. Can you make a 10?

16 + 7 = _____

  • 86; I can not make a 10.
  • 23; I can make a 10.
  • 14; I can make a 10.
  • 13; I can make a 10.

23; I can make a 10.

500

38 + 24 =

62

500

Find the sum. Can you make a 10?

8 + 15 = _____

  • 23; I can make a 10.
  • 95; I can not make a 10.
  • 13; I can make a 10.
  • 14; I can make a 10.

23; I can make a 10

500

45 + 23 =

68