2. Addition and subtraction

Use the number line, to help you find the value of $19+343$19+343.

$19+343$19+343 $=$= $\editable{}$

Easy

< 1min

Use the number line to help you find the value of $21+242$21+242.

Easy

< 1min

Find the value of $142+311$142+311.

Easy

< 1min

Find the value of $222+311$222+311.

Easy

< 1min

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