Finger Rule for 9's
Skip Counting
Doubling & Addition/Subtraction
Annexing Zero Rule
100

This is the answer to 9x4

What is 36?

100
Using skip counting, this is the answer to 5 X 3...
What is 5, 10, 15..... or 3, 6, 9, 12, 15.. = 15?
100
Using doubling, if 3 x 4 = 12, then 6 X 4 =....
What is 12 + 12 = 24?
100

Using the Zero rule what is 10 x 80

What is 800?

200

This is the answer to 9 X 2...

What is 18?

200
Using skip counting, this is the answer to 4 X 4...
What is 4, 8, 12, 16 = 16?
200
Using doubling, if 4 x 7 = 28, then 8 X 7 =....
What is 28 + 28 = 56?
200

Using the zero rule, 30x40 =....

What is 1200?

300

This is the answer to 9X 3 using dots..

What is 27?

300
Using skip counting, this is the answer to 9 X 3...
What is 9, 18, 27... or 3, 6, 9, 12, 15, 18, 21, 24, 27.. = 27?
300
If 8 groups of 7 = 56, then 9 groups of 7 =
What is 56 + 7 = 63?
300

Using the zero rule, 20x50 =....

What is 1000?

400

This is the answer to 9x6...

What is 54?

400
Using skip counting, this is the answer to 8 X 3...
What is 8, 16, 24.... or 3, 6, 9, 12, 15, 18, 21, 24 = 24?
400
If 5 groups of 6 = 30, then 6 groups of 6 =....
What is 30 + 6 = 36?
400
Using the zero rule, 400 X 40 =.....
What is 16000?
500

This is the answer to 9 x 9...

What is 81?

500
Using skip counting, this is the answer to 5 x 5...
What is 5, 10, 15, 20, 25 = 25?
500
If 5 groups of 7 = 35, then 4 groups of 7 =...
What is 35 - 7 = 28?
500
Using the zero rule, 80 X 30 =.....
What is 2400?
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