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Challenge Rules for Multiplication Tables 09Unit
jOb ective Complete multiplication tables by finding patterns.

Challenge Rules for Multiplication Tables 1. Textbook Instructions

1 . The following shows parts of a multiplication table. 1. This problem can be given to students who
easily finished activity 3.
Find the pattern and complete the parts of the table.

^ 1 2 3 4 5 ... ^ 234 Have students look at the parts cut out from
1 1 2 3 4 5 ... the multiplication table. Have them find the
2 468 two numbers that are multiplied for each
22 10 ... 3 6 9 12 number.
4 8 12 16
33 15 ...

44 20 ...

5 5 10 15 20 25 ... For students who are having difficulty

...
...
...
...
...
...
...

solving the problems, have them write the

two numbers that are multiplied around the

table to help them clearly see the numbers

that are being multiplied.

a. 6 8 10 c. 9 12 Refer to .
9 12 15 6
12 16 20
8 12 16

b. 10 15 20
12 15 18
16 20 24
20 25 30

9. Multiplication Tables 89

2. Build Understanding

You can complete the parts of the multiplication table in the following way for problem 1.

1a. ^ 3 4 5 1b. ^ 4 5 6 1c. ^ 2 3 4

2 6 8 10 3 12 15 18 3 6 9 12
3 9 12 15 4 16 20 24 4 8 12 16
4 12 16 20 5 20 25 30 5 10 15 20

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