2. Addition and subtraction

Find the missing number to equal the number $29$29.

a

$27+\editable{}=29$27+=29

b

$19+\editable{}=29$19+=29

c

$2+\editable{}=29$2+=29

Easy

Approx 2 minutes

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uses mental and written strategies for addition and subtraction involving two-, three-, four and five-digit numbers

generalises properties of odd and even numbers, generates number patterns, and completes simple number sentences by calculating missing values