Maths. Week 6 -Basic Three, 1st Term(Quiz)

Counting up solving the addition up to 20 (Mon)

Make doubles when both numbers are close to doubles: decomposing one of the numbers to create doubles Example1: Add 25 + 26, think 25 + 25 + 1 (Mon)

Make doubles when both numbers are close to doubles: decomposing one of the numbers to create doubles Example1: Add 25 + 26, think 25 + 25 + 1 (Tue)

Make 10s when one number is close to 10 or to multiples of 10 by shifting a quantity from one number to the other to create a multiple of 10. e.g. for example, 28 + 47, think 30 + 45, which is the equivalent of moving 2 from 47 to 28 (Wed)

Make 10s when one number is close to 10 or to multiples of 10 by shifting a quantity from one number to the other to create a multiple of 10. e.g. for example, 28 + 47, think 30 + 45, which is the equivalent of moving 2 from 47 to 28 (Thurs)

Subtract by counting up in friendly jumps. (Fri)