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