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Rounding Decimals Round of the following to 2 decimal places What are the two options for our answer? What decimal is right in the middle? Where does it lie? Which is it closer to? = 12.35
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RoundingTo round off to a decimal:1. Check how many decimal places you need to round the answer to.
a. The question may ask for 1, 2 etc decimal places.b. The question may ask for the nearest tenth, hundredth, etc.
2. Find this decimal place.3. Look at the number in the next decimal place:
a. If the number is 0, 1, 2, 3 or 4:Write the original number to the decimal place required.Leave off all other numbers.
b. If the number is 5, 6, 7, 8 or 9Write the original number to the decimal place required.BUT make the last digit 1 bigger.
Year 7 mathematics: Decimals May 3, 2023
Example 1Round the following to the number of places indicated.a) 5·456 (1)b) 7·38499 (2)c) 8·01950001 (3)
5·57·388·020
Example 2Round the following to the number of places indicated.a) 0·2499 (tenth)b) 7·9998 (thousandth)c) 1·714895 (hundredth)
0·28·0001·71
Year 7 mathematics: Decimals May 3, 2023
Year 7 mathematics: Decimals May 3, 2023
Rounding Decimals
Round of the following to 2 decimal places
12.347
12.34 12.35 12.345
What are the two options for our answer?
What decimal is right in the middle?
Where does it lie?
Which is it closer to?
= 12.35
Year 7 mathematics: Decimals May 3, 2023
Rounding Decimals
Round of the following to 2 decimal places
0.562
0.56 0.57 0.565
What are the two options for our answer?
What decimal is right in the middle?
Where does it lie?
Which is it closer to?
= 0.56
Year 7 mathematics: Decimals May 3, 2023
Rounding Decimals
Round of the following to 2 decimal places
0.499
0.49 0.50 0.495
What are the two options for our answer?
What decimal is right in the middle?
Where does it lie?
Which is it closer to?
= 0.50
Year 7 mathematics: Decimals May 3, 2023
Rounding Decimals
Round of the following to 1 decimal place
0.326
0.3 0.4 0.35
What are the two options for our answer?
What decimal is right in the middle?
Where does it lie?
Which is it closer to?
= 0.3
Year 7 mathematics: Decimals May 3, 2023
Rounding Decimals
Round of the following to 1 decimal place
0.481
0.4 0.5 0.45
What are the two options for our answer?
What decimal is right in the middle?
Where does it lie?
Which is it closer to?
= 0.5
Year 7 mathematics: Decimals May 3, 2023
Rounding Decimals
Round of the following to the nearest whole number
5.83
5 6 5.5
What are the two options for our answer?
What decimal is right in the middle?
Where does it lie?
Which is it closer to?
= 6
Year 7 mathematics: Decimals May 3, 2023
Rounding Decimals
Round of the following to the nearest whole number
7.49
7 8 7.5
What are the two options for our answer?
What decimal is right in the middle?
Where does it lie?
Which is it closer to?
= 7
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