Mathematics
Grade-2
Easy
Question
Add the following number blocks, regroup them if needed.
- 70
- 80
- 90
- 75
The correct answer is: 80
There is total of 7 tens blocks and 10 ones blocks.
On regrouping 10 ones as 1 ten we get, 8 tens blocks and 0 ones block i.e.
10+10+5+10+10+10+10+5
=10+10+10+10+10+10+(5+5)
=10+10+10+10+10+10+10
=80
So, the correct answer is 80.
So, correct choice is 2.
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