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Multiplication Table of 9
Repeated addition by 9’s means the multiplication table of 9.
(i) When 7 heaps having nine footballs each.
By repeated addition we can show 9 + 9 + 9 + 9 + 9 + 9 + 9 = 63
Then, nine 7 times or 7 nines
7 × 9 = 63
Therefore, there are 63 footballs.
(ii) When 4 groups having nine crabs each.
By repeated addition we can show 9 + 9 + 9 + 9 = 36
Then, nine 4 times or 4 nines
4 × 9 = 36
Therefore, there are 36 crabs.
We will learn how to use the number line for counting the multiplication table of 9.
(i) Start at 0. Hop 9, two times. Stop at 18.
2 nines are 18 2 × 9 = 18
(ii) Start at 0. Hop 9, eight times.
Stop at ____. Thus, it will be 72
8 nines are 72 8 × 9 = 72
(iii) Start at 0. Hop 9, twelve times.
Stop at ____. Thus, it will be 108
12 nines are 108 12 × 9 = 108
How to read and write the table of 9?
The above chart will help us to read and write the 9 times table.
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Read 1 nine is 9 2 nines are 18 3 nines are 27 4 nines are 36 5 nines are 45 6 nines are 54 7 nines are 63 8 nines are 72 9 nines are 81 10 nines are 90 11 nines are 99
12 nines are 108 |
Write 1 × 9 = 9 2 × 9 = 18 3 × 9 = 27 4 × 9 = 36 5 × 9 = 45 6 × 9 = 54 7 × 9 = 63 8 × 9 = 72 9 × 9 = 81 10 × 9 = 90 11 × 9 = 99
12 × 9 = 108 |
Now we will learn how to do forward counting and backward counting by 9’s.
Forward counting by 9’s: 0, 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108, 117, 126, 135, 144, 153, 162, 171, 180, 189, 198, 207, 216, 225.
Backward counting by 9’s: ……, 225, 216, 207, 198, 189, 180, 171, 162, 153, 144, 135, 126, 117, 108, 99, 90, 81, 72, 63, 54, 45, 36, 27, 18, 9, 0
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