Question

Estimate the sum using general rule.
8,908 + 2999
It is really important

Answer 1

Answer:

8908+2999=11907

first 8+9=17

balance 1 will go

8+9=17 1will go up

0+9=9 but add 1

1+9=10

lagain 1 will go up

9+9=18

but add 1

10+9=19

again 1will go up

8+2=10 but 1will go up

9+2=11

8908+2999=11907