Answer:
1. Write the numbers vertically so the decimal points line up.
2. Use zeros as place holders, as needed.
3. Add or subtract the numbers as if they were whole numbers. Then place the decimal in the answer under the decimal points in the given numbers.
To subtract decimals, follow these steps:
Write down the two numbers, one under the other, with the decimal points lined up.
Add zeros so the numbers have the same length
Then subtract normally, remembering to put the decimal point in the answer
Example: Subtract 0.03 from 1.1
Line the decimals up: 1.1 −0.03 "Pad" with zeros: 1.10 −0.03 Subtract: 1.10 −0.03 1.07
Answer: 1.07
That was just like 110 − 3 = 107, but with the decimal point in a different position
Example: Calculate 7.005-0.55
Line the decimals up: 7.005 −0.55 "Pad" with zeros: 7.005 −0.550 Subtract: 7.005 −0.550 6.455
Answer: 6.455
And that was just like 7005 − 550 = 6455
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Answers & Comments
Answer:
1. Write the numbers vertically so the decimal points line up.
2. Use zeros as place holders, as needed.
3. Add or subtract the numbers as if they were whole numbers. Then place the decimal in the answer under the decimal points in the given numbers.
To subtract decimals, follow these steps:
Write down the two numbers, one under the other, with the decimal points lined up.
Add zeros so the numbers have the same length
Then subtract normally, remembering to put the decimal point in the answer
Example: Subtract 0.03 from 1.1
Line the decimals up: 1.1 −0.03 "Pad" with zeros: 1.10 −0.03 Subtract: 1.10 −0.03 1.07
Answer: 1.07
That was just like 110 − 3 = 107, but with the decimal point in a different position
Example: Calculate 7.005-0.55
Line the decimals up: 7.005 −0.55 "Pad" with zeros: 7.005 −0.550 Subtract: 7.005 −0.550 6.455
Answer: 6.455
And that was just like 7005 − 550 = 6455