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Hong Kong
Stage 1

Strategy - Compensation (single and double digit)

Interactive practice questions

If $6+10=16$6+10=16, what is the answer to $6+8$6+8?

Easy
Less than a minute

If $7+10=17$7+10=17, what is the answer to $7+11$7+11?

If $10-5=5$105=5, what is the answer to $11-5$115?

If $10-7=3$107=3, what is the answer to $9-7$97?

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