Grade 2 · Add Up to Four Two-Digit Numbers

Sum Stack Airship

FLIGHT 1 OF 5

Add 23, 17, and 34. First, pick two crates whose ones make ten.

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PAIR 1

LEFT OVER

Choose two crates whose ones digits add to 10.

Several addends can be regrouped into friendly totals. Pairing ones that make ten simplifies adding two-digit numbers.

For 24 + 36 + 15 + 25, combine 24 + 36 = 60 and 15 + 25 = 40. Then 60 + 40 = 100.

Include every crate exactly once and keep track of any unpaired crate.

A free Grade 2 math game for practicing add up to four two-digit numbers. No account or download is needed.

Learning area: Adding & subtracting · Addition Strategies.

Difficulty: 3 · Challenge within Grade 2. Combine ideas, remember more information or solve several steps.

Select cargo crates whose ones digits make ten, combine each friendly-ten stack, then add the stacks and any leftover crate to balance the airship.

Choose an activity that fits your learner. Grade labels are a guide; adults can help with the instructions.