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Question
Find whether the following number is divisible by 3: 543
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Solution
Sum of digits = 5 + 4 + 3 = 12
Which is divisible by 3
543 is divisible by 3
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Complete the multiplication chart given here.
Look at the green boxes in the chart. These show how we can get 12 by multiplying different numbers.
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What are the factors of 10?
Can you do this from the chart?
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Write first five multiples of 9.
Match the items in column 1 with the items in column 2.
|
|
Column 1 |
|
Column 2 |
|
(i) |
35 |
(a) |
Multiple of 8 |
|
(ii) |
15 |
(b) |
Multiple of 7 |
|
(iii) |
16 |
(c) |
Multiple of 70 |
|
(iv) |
20 |
(d) |
Factor of 30 |
|
(v) |
25 |
(e) |
Factor of 50 |
|
|
|
(f) |
Factor of 20 |
Write all the factors of the following number.
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27
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Common factors of two numbers are:
