Decimal Operations Word Problems

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

Front

How do you multiply decimals?

Back

To multiply decimals, multiply the numbers as if they were whole numbers, then count the total number of decimal places in both numbers and place the decimal point in the product accordingly.

Front

How do you divide decimals?

Back

To divide decimals, if the divisor has a decimal, move the decimal to the right to make it a whole number, and move the decimal in the dividend the same number of places. Then divide as usual.

Front

What is the total weight of 3.5 kg of apples bought for 4 days?

Back

14 kg (3.5 kg x 4 days = 14 kg).

Front

If Emma has 5.2 meters of ribbon and cuts it into 4 equal pieces, how long is each piece?

Back

1.3 meters (5.2 meters ÷ 4 = 1.3 meters).

Front

What is the cost of 2.5 meters of fabric at $6.20 per meter?

Back

$15.50 (2.5 meters x $6.20 = $15.50).

Front

What is the difference between 8.9 meters of ribbon and 5.4 meters used?

Back

3.5 meters (8.9 meters - 5.4 meters = 3.5 meters).

Front

What must you do first when dividing 12.6 by 0.3?

Back

Make the divisor a whole number (0.3 becomes 3 by moving the decimal one place to the right).