- Adding and Subtracting Decimals
- Addition of Aligned Decimals
- Decimal Addition With 3 Numbers
- Subtraction of Aligned Decimals
- Decimal Subtraction: Basic
- Decimal subtraction: Advanced
- Decimal Addition and Subtraction With 3 or More Numbers
- Estimating a Decimal Sum or Difference
- Addition With Money
- Subtraction With Money
- Word Problem With Addition or Subtraction of 2 Decimals
- Word Problem With Addition of 3 or 4 Decimals and Whole numbers
- Word Problem With Subtraction of a Whole Number and a Decimal: Regrouping With Zeros
Decimal Subtraction: Basic
Basic subtraction of decimals is similar to subtraction of whole numbers without borrowing.
First the decimals are written in such a way that digits with same place values are vertically aligned.
We then add zeros to the right of decimal numbers where ever necessary so that all numbers have the same number of digits after the decimal point.
We begin with the rightmost column and start subtracting the digits. Then we keep moving to the left till all columns are subtracted.
Subtract 38.48 − 16.3
The decimals are aligned as shown. A zero is added to the right of 16.3 as the maximum number of decimal places is 2.
We start with the right most column. Subtract 8 − 0 = 8; then moving to left column 4 − 3 = 1; again moving left 8 − 6 = 2; next 3 − 1 = 2;
So the difference of the decimals is 12.18
Subtract 29.58 − 16.46
The decimals are aligned as shown.
We start with the right most column. Subtract 8 − 6 = 2; then moving to left column 5 − 4 = 1; again moving left 9 − 6 = 3; next 2 − 1 = 1;
So the difference of the decimals is 13.12
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