Rounding Decimals
- Round numbers with 1 decimal place to the nearest
whole number.
- Look at the digit in the tenths column to
understand whether to round a number up or not
- If a number is
exactly half-way, then by convention we round up to the next
integer.
Which whole numbers does the decimal lie between? Which whole number is the decimal closer to on the number
line? Which column do we focus on when rounding to the nearest
whole number?
Millie has £10. Estimate which of these items she could buy.
1,433 falls between ____ and ____. When rounding to the nearest 1,000, we have to look at the ________ column. There are ___ hundreds in 1,433 so we round ________.
1,463 rounded to the nearest 1000 = ____.
four
hundreds
1400
thousands
three
1000
1500
down
We can apply this understanding to decimals.
2.7 falls between ______ and ______ but is closer to ______ on the number line. 2.7 rounded to the nearest whole number is ______.
Round these numbers to the nearest whole number.
Use the stem sentences to help you.
__.__ falls between ______ and ______ but is closer to ______ on the number line. __.__ rounded to the nearest whole number is ______.
Write a decimal that...
__.__ falls between ______ and ______ but is closer to ______ on the number line. __.__ rounded to the nearest whole number is ______.
Darcey’s notebook has a height of 21.3cm and a
width of 14.8cm. What are the dimensions rounded to the nearest cm?
__.__ falls between ______ and ______ but is closer to ______ on the number line. __.__ rounded to the nearest whole number is ______.
The dimensions are:
height = ______cm, width = _______cm (to the nearest cm)
I agree with Anita. 5.8cm will round up to 6 and 6.4 will also round up to 7.
I disagree with Anita. 5.8cm will round up to 6 and 6.4 will also round down to 6.
Y4 rounding decimals to whole numbers
Ketna Mistry
Created on November 11, 2021
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Transcript
Rounding Decimals
Which whole numbers does the decimal lie between? Which whole number is the decimal closer to on the number line? Which column do we focus on when rounding to the nearest whole number?
Millie has £10. Estimate which of these items she could buy.
1,433 falls between ____ and ____. When rounding to the nearest 1,000, we have to look at the ________ column. There are ___ hundreds in 1,433 so we round ________. 1,463 rounded to the nearest 1000 = ____.
four
hundreds
1400
thousands
three
1000
1500
down
We can apply this understanding to decimals.
2.7 falls between ______ and ______ but is closer to ______ on the number line. 2.7 rounded to the nearest whole number is ______.
Round these numbers to the nearest whole number. Use the stem sentences to help you.
__.__ falls between ______ and ______ but is closer to ______ on the number line. __.__ rounded to the nearest whole number is ______.
Write a decimal that...
__.__ falls between ______ and ______ but is closer to ______ on the number line. __.__ rounded to the nearest whole number is ______.
Darcey’s notebook has a height of 21.3cm and a width of 14.8cm. What are the dimensions rounded to the nearest cm?
__.__ falls between ______ and ______ but is closer to ______ on the number line. __.__ rounded to the nearest whole number is ______. The dimensions are: height = ______cm, width = _______cm (to the nearest cm)
I agree with Anita. 5.8cm will round up to 6 and 6.4 will also round up to 7.
I disagree with Anita. 5.8cm will round up to 6 and 6.4 will also round down to 6.