Decimals

Rounding Decimals Steps

100

"Find the rounding place and put a line under it." 

What STEP is this when you are rounding decimals? 

Step 1

200

5 or more, up the score. 

4 or less, give it a rest (the number stays the same.)

What step is this? 

Step 3

300

What is step 4 of rounding decimals? 

Hint: look at your Rounding Decimals worksheet!

Everything to the left of the rounded number stays the same. Everything else gets removed. 

400

Describe and show (on the board) how you would do step 2 when rounding a decimal using this number: 

Round to the nearest tenth:

2.275

2.3

500

Use your rounding decimal steps to round the following number to the nearest hundredth

246.923

246.92

Greater than, less than, equal to?

100

4.1 or 4.09

Which decimal is greater? 

4.1

200

Is one and four tenths greater than 1 4/10?

They are equal!

300

Is zero and four hundredths equal to zero and four tenths? 

4/100 

4/10

Yes!

400

Which decimal is greater? 

4.50

4.09

4.50

500

Which decimal is greater? 

6.70

7.60

7.60 is greater than 6.70

Sum

100

2.34+7.89

10.23

200

8.2+1.4

9.6

300

2.5+6.4

8.9

400

15+2.34

17.34

500

22.25+20.40

42.65

Difference

100

5.6-2.3

3.3

200

7.4-5.60

1.80

300

9.47-5.25

4.22

400

12.24-6.23

6.01

500

Round the following numbers to the nearest tenth:

6.17

4.56

AND then subtract your new numbers from each other!

6.2

4.6

Final answer: 1.6

In words

100

Say/write the following number in words: 

1.57

one and fifty seven hundredths

200

Say/write the following number in words: 

2.180

two and one hundred eighty thousandths

300

Say/write the following number in words: 

4.676

four and six hundred seventy six thousandths 

400

21.32

twenty one and thirty two hundredths

500

245.21 

two hundred forty five and twenty one hundredths