Adding and Subtracting Decimals

adding

100

0.1 + 3.7 =

3.8

200

add 4 tenths and 6 and four hundredths

6.46

300

4.38 + 14.2

18.58

400

.004 + 16.32

16.324

500

The sum of 54.1 and 16.34 is

70.44

subtracting

100

3 - .04 =

2.96

200

3.83 - 1.6 =

2.23

300

The difference between 4.4 and 6 is

1.6

400

66.32 - 9.45 =

56.87

500

8 ones 2 hundredths - 1 one 8 tenths 3 hundredths

6.19

place value

100

What is the value of the 3 in 34.567

30

200

In 342. 567 what place value is the digit 3 in?

Hundreds

300

In 302. 578 what is the value of the 8?

.008 (eight thousandths)

400

in 0.429 what is the value of the digit 9?

.009 (nine thousandths)

500

In 3,294.057 what is the value of the 3?

3,000 (three thousand)

estimating

100

The closest estimate for the sum of 1.08 and 7.2 is

8

200

Round the numbers to the nearest whole number and find the value.  41.8 + 10.1 =

52

300

Estimate the sum of 2.08 and 8.8

11

400

The closest estimate for 13.98 - 6.03 =

8

500

999.9 + 99.7 =

1,100

math fun

100

What word does the decimal point mean?

and

200

What is the answer to a subtraction problem?

difference

300

Do you like bar models?

yes or no :)

400

What is the answer to an addition problem?

sum

500

What letters do you add when saying decimals? 

ths