vocabulary
rounding to the nearest Whole Number
rounding to the nearest tenth
Estimation
decimal operations
100

What is the dot used to seperate the whole number part from the fractional parts in a decimal number?

Decimal point

100

Round this number to the nearest WHOLE number:

13.5

14

100

Round this number to the nearest tenths place:

4.345

4.3

100

Estimate the answer by rounding to the nearest WHOLE number:

8.7 + 3.1

8.7 rounds to 9

3.1 rounds to 3

answer is: 12

100

4.52 + 3.8

8.32

200
To ____________________ means to find an approximate answer that is close to the exact answer by rounding first.

Estimate

200

Round this number to the nearest WHOLE number:

3.4

3

200
round this number to the nearest tenths place:  


7.08

7.1
200
Estimate the answer by rounding to the nearest WHOLE number:


19.95 + 10.23

19.95 rounds to = 20

10.23 rounds to = 10

Answer = 30

200

9.6 - 3.25

6.35

300

When you multiply two decimal numbers together, the final answer you get is called the ________________.

Product

300

Round this number to the nearest WHOLE number:

7.345

7

300

Round this number to the nearest tenths: 

654.32

654.3

300

Estimate the answer by rounding to the nearest WHOLE number:

6.2 x 4.9

6.2 rounds to 6

4.9 rounds to 5

Answer = 30

300

2.5 x 3

7.5

400

The answer to a subtraction problem is the _______________, while the answer to an addition problem is the____________________.

Difference & Sum
400

Round this number to the nearest WHOLE number:

.68

1

400

Round this number to the nearest tenths:

.99

1

400

Estimate the answer by rounding to the nearest WHOLE number:

12.4 - 4.8

12.4 rounds to 12

4.8 rounds to 5

answer = 7

400

1.2 x 0.5

0.6

500

When dividing decimals, the final result is called the ________________

Quotient

500

Round this number to the nearest WHOLE number:

.08

0

500

Round this number to the nearest tenths:

3.98

4

500

You buy a game for $7.85 and a drink for $2.15.  Estimate your total bill.

$7.85 rounds to $8

$2.15 rounds to $2

Estimated total is = $10

500

1.5 / 3

0.5