Estimate: 55 +8
50
60
7
8

But the actual solution is 63.

Step-by-step explanation:

55+8=63

63

3<5 so you don't round up, you round down.

Rounding down... 60

60

But the actual solution is 63.

step-by-step explanation:

0.0076, if you meant 4.125 divided by 0.03125 it would be 132

step-by-step explanation:

first you have to move the decimal in 0.03125 over until its behind the 5 which is 5 places over. now the number is 3125

then you have to move the decimal in 4.125, 5 places over. now the number is 4,112,500.

now you divide like you would normally would and get 0.0076