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2. Follow the instructions to find the common multiples of two numbers.
a. Mark on the multiples of 3 and mark on the multiples of 7. Then, find the
common multiples.
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
The common multiple of 3 and 7 is .
b. Mark on the multiples of 4 and mark on the multiples of 8. Then, find the
common multiples.
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
The common multiples of 4 and 8 are , , , , and .
3. Find the common multiples.
a. Multiples of 2: 2, 4, 6, 8, 10, 12 ...
Multiples of 4: 4, 8, 12, 16, 20 ...
The first two common multiples of 2 and 4 are and .
b. Multiples of 3: 3, 6, 9, 12, 15, 18 ...
Multiples of 9: 9, 18, 27, 36, 45 ...
The first two common multiples of 3 and 9 are and .
2. Follow the instructions to find the common multiples of two numbers.
a. Mark on the multiples of 3 and mark on the multiples of 7. Then, find the
common multiples.
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
The common multiple of 3 and 7 is .
b. Mark on the multiples of 4 and mark on the multiples of 8. Then, find the
common multiples.
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
The common multiples of 4 and 8 are , , , , and .
3. Find the common multiples.
a. Multiples of 2: 2, 4, 6, 8, 10, 12 ...
Multiples of 4: 4, 8, 12, 16, 20 ...
The first two common multiples of 2 and 4 are and .
b. Multiples of 3: 3, 6, 9, 12, 15, 18 ...
Multiples of 9: 9, 18, 27, 36, 45 ...
The first two common multiples of 3 and 9 are and .
