Number (add/sub)

Hong Kong

Stage 1

Which of the following pairs of numbers add to $10$10?

$3$3 and $7$7

A

$2$2 and $8$8

B

$5$5 and $5$5

C

$1$1 and $9$9

D

Easy

< 1min

How many more do we need to add to $1$1 to get to $10$10?

Easy

< 1min

How many more do we need to add to $9$9 to get to $10$10?

Easy

< 1min

We want to find $6+5$6+5.

Easy

< 1min

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