Skills · The Number System · Integer Operations

Fractions: + and −, like denominators

Printable practice with an answer key the engine computes, at three levels, in as many versions as you need.

Problem types

• adding: 1/6 + 3/6
• subtracting: 5/6 − 1/6
• mixed numbers: 2 1/5 + 1 2/5
• borrowing a whole: 3 1/4 − 1 3/4

Sample Sheet · Level 1

1. 35 − 15 =
2. 27 + 37 =
3. 78 − 48 =
4. 14 + 24 =
5. 68 − 58 =
6. 57 − 27 =
7. 15 + 45 =
8. 16 + 26 =

Answer key

1. 25
2. 57
3. 38
4. 34
5. 18
6. 37
7. 1
8. 12

Sample Sheet · Level 3

1. 610 − 510 =
2. 812 − 212 =
3. 25 + 35 =
4. 57 + 37 =
5. 5511 − 4611 =
6. 6 − 559 =
7. 534 − 314 =
8. 6911 + 6211 =

Answer key

1. 110
2. 12
3. 1
4. 87 = 117
5. 1011
6. 49
7. 52 = 212
8. 13

Make your own

Pick the count, the level and the version, and print it with work space and the key on its own page. The same skill also makes an I Do, We Do, You Do lesson, a Mosaic, a Decoder and more.

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