Example: 1.4 + 2.9

1.0+2.0= 3.0 0.4+0.9= 1.3

3.0 + 1.3= 4.3

Subtracting: First you need to subtract the ones place together then subtract the tenths place together and then add the answers together.

Example: 4.3-3.1

4.0-3.0= 1.0 0.3-0.1=0.2

1.0+0.2= 1.2

Multiply: Multiply normally, ignore the decimals.Then just put the decimals in the answer. In other words, just count up how many numbers are after the decimal point in

*both*numbers you are multiplying, then the answer should have that many numbers after

*its*decimal point.

Example:

0.03 x 1.1

Ignore the decimals= 3 x 11=33

0.03 has 2 decimals places and 1.1 has 1 decimal place so the answer has 3 decimal places: 0.033

Decimals: Use long division and ignore the decimal point.Then put the decimal point in the same spot as the divided.

Example:9.1 divided by 7

__13__

7 )91

9

21

0

9

__7__21

__21__0

Put the decimal point in the answer directly above the decimal point in the divided.

7 )9.1

__1.3__

7 )9.1

1.3 is the final answer

## No comments:

## Post a Comment

Note: only a member of this blog may post a comment.