Decimal Operations

Estimation

100

Estimate this SUM

4.12 + 2.7009

7

200

Estimate the DIFFERENCE

17.1-3.89

13

300

Estimate the PRODUCT

2.15 x 3.8

8

400

Estimate the QUOTIENT

14.5 divided by 3

5

500

Estimate the QUOTIENT

12.25 divided by 0.5

24

Addition

100

Find the SUM

2.1 + 1.5

3.6

200

Find the SUM

$5.12 + $3.70

$8.82

300

Find the SUM

16.1 + 2.999

19.099

400

Find the SUM

4.379 + 1.25

5.629

500

When adding decimals this should always happen with place value.

Line'em Up

Subtraction

100

find the DIFFERENCE

1.99 - 0.7

1.29

200

This should always happens when adding or subtracting with with decimals.

Line up the place value

300

Find the DIFFERENCE

$5.12 - $3.70

$1.42

400

Find the DIFFERENCE

13.7 - 2.58

11.12

500

Find the DIFFERENCE

15.5 - 9.71

5.79

Multiplication

100

Find the PRODUCT

3.6 x 9

32.4

200

True or False

When Multiplying decimals, we have to line up the place value (decimal) ?

FALSE

300

Find the PRODUCT

22.5 x 0.3

6.75

400

The number of decimal place value to the right of the decimal of the problem

20.19 x 5.21

4

500

Find the PRODUCT

3.12 x 1.5

4.68

Division

100

Find the QUOTIENT

$21 divided by 4 friends

$5.25

200

Find the QUOTIENT

9.1 divided by 7

1.3

300

This happens when there is a decimal in the DIVISOR

Multiply by power of 10 to move it to the right

400

Find the QUOTIENT

15 divided by 0.2

75

500

Find the QUOTIENT

0.0072 divided by 0.8

0.009