J's answer to Isaac's Primary 6 Maths Data Analysis Singapore question.
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Number ÷ 20 = quotient R 7
So the Number = 20 × quotient + 7
Notice that 20 is already a multiple of 5 since 5 × 4 = 20.
i.e (quotient × 20) can be rearranged into many groups of 5.
We only have to add to the 7 to make the entire number a multiple of 5.
We need to add. The closest multiple of 5 we can get to, is 10 (10 = 5 × 2)
Number to be added to 7 would be :
10 - 7 = 3
So the Number = 20 × quotient + 7
Notice that 20 is already a multiple of 5 since 5 × 4 = 20.
i.e (quotient × 20) can be rearranged into many groups of 5.
We only have to add to the 7 to make the entire number a multiple of 5.
We need to add. The closest multiple of 5 we can get to, is 10 (10 = 5 × 2)
Number to be added to 7 would be :
10 - 7 = 3
Date Posted:
2 years ago
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