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Grade 2 Science · Problem type

Building with small pieces

Use this for “A 30-block tower is rebuilt as a house. How many blocks are left over?”

Picture

Blocks in the tower: 30246Blocks in the new houseBlocks left over
24 + 6 = 30
This is an example. Type the numbers from your problem to start.
Blocks in the new house
+
Blocks left over
=
Blocks in the tower

Number sentences

24 + 6 = 30

Good to know

•
Small pieces can be put together to make a bigger object.
•
Take the tower apart. Build a house from the same blocks.
•
Count the blocks in the house and the blocks left over.

Step-by-step

WE KNOW
Blocks in the tower: 30 Blocks in the new house: 24
FIND
blocks left over
Step 1 · Find blocks left over
24 + ? = 30
Count up from the blocks in the new house to the blocks in the tower.
30 − 24
Blocks left over: 6
Check
Put the numbers back in. Both sides should match.
24 + 6 = 30 ✓
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