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Question
Throw two dice together. What are the numbers that turn up on the faces of the dice? Make a two-digit number using them. If it is a multiple of any of the numbers written next to the circles, you can write it in that circle. Then it is your friend’s turn. The one who can write more numbers in 10 rounds is the winner.
Hint: I have 3 and 2 on my dice. If I make 23, it is not the multiple of any of the numbers. So I will make 32, which is a multiple of 4, and write it in the red circle.
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Solution
A dice has six faces with numbers 1, 2, 3, 4, 5, and 6.
Using all these numbers taking two at a time we can form the multiples of 6, 4, 5, and 7 as follows:
Multiples of 6: 12, 24, 36, 42
Multiples of 4: 12, 16, 24, 32
Multiples of 5: 15, 25, 35, 45
Multiples of 7: 14, 21, 35, 42
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More tamarind seeds
Ammini is arranging 12 tamarind seeds in the form of different rectangles. Try to make more rectangles like this using 12 tamarind seeds. How many different rectangles can you make?
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.
27
