Addition and Subtraction

Sally and her mum were at home. Her grandma came around to visit, then her dad and brother came home together.

a

Which number sentence matches the number of people in the house?

$2-1+2$2−1+2

A

$2+1-2$2+1−2

B

$2+1+2$2+1+2

C

$1+1+2$1+1+2

D

$2-1+2$2−1+2

A

$2+1-2$2+1−2

B

$2+1+2$2+1+2

C

$1+1+2$1+1+2

D

b

How many people are in the house altogether?

Easy

Less than a minute

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Use simple additive strategies with whole numbers and fractions