Step by Step
What is the first step in rounding decimals?
Find the rounding place.
Underline the rounding digit to the nearest tenths place.
0.45
4
What is another word for rounding?
estimating
Round 0.87 to the nearest tenth.
0.90 or 0.9
Find two numbers that round to 35.4 when rounded to the nearest tenth.
35.45 34.42
35.391 35.44
35.391
35.44
What do you do after you've found the rounding place?
Look at the digit to the right of the rounding place.
Underline the rounding digit to the nearest hundreths place.
1.762
6
What is the number in word form?
.17
seventeen hundreths
Round 0.678 to the nearest hundredths place.
0.68
To round 74.58 to the nearest tenth, which digit do you look at? What is 74.58 rounded to the nearest tenth?
You look at the 5.
74.6
What should you do to the right of the rounding place if it is 5 or greater?
Add 1 to the rounding place.
Underline the rounding digit to the nearest ones place.
6.73
6
Read the number in word form.
32.65
Thirty- two and sixty five hundreths
Round 196 to the nearest tens place.
200
In science class, Marci recorded numbers from an experiment as 12.87, 12.13, 12.5, and 12.08. Which two numbers are closer to 12?
12.08 and 12.5
What do you do if the digit to the right of the rounding place is 4 or less?
Leave the rounding digit alone. Everything else changes to zeros or drops.
Underline the rounding digit to the nearest tens place.
56.8
5
Rounding does not give you an exact correct answer. It tells you what?
About how many or how much
What is 7.876 rounded to the nearest whole number?
8 or 8.0
Carrie said, “448 rounds to 500 because 448 rounds to 450 and 450 rounds to 500.” Is she correct? Explain.
No, because 448 is closer to either 450 or 400, not 500.
If I wanted to round 11.675 to the nearest tenths place, and I underline the 6, what are the next steps?
Look at the digit to the right (7). It is 5 or more so add 1 to the rounding place (6). Everything behind it drops. 11.7
Underline the rounding digit to the nearest hundreds place.
231.9
2
Read the number in word form.
654.75
six- hundred fifty- four and seventy- five hundreths.
Round 8.963 to the nearest tenths place
9
Na'ilah and Yusur had $11.00. They wanted to buy some slime for $5.25, a ball for $4.25 and some candy for $3.00. Use rounding to estimate their total for all three items. Will they have enough to pay for them all?Why or why not?
No. The total of the items are $12.50 and they only have $11.00.