This blog is managed by Song Hock Chye, author of Improve Your Thinking Skills in Maths (P1-P3 series), which is published and distributed by EPH.

Wednesday, April 14, 2010

CHIJ St Nicholas Girls' Sch 2009 P6 SA1 Paper 2 Q1

The table below shows the difference between the digits in some 2-digit numbers.

List all the 2-digit numbers, from 40 to 100, in which the digits have a difference of 3. Arrange them in ascending order.

Answer: 41, 47, 52, 58, 63, 69, 74, 86, 96

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