Adding, subtracting and multiplying decimals

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 representation of 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

What is the result of 7.8 + 1.34?

Back

9.14

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

What is the result of 4.5 - 2.3?

Back

2.2

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 factors and place the decimal point in the product accordingly.

Front

What is the result of 4 x 0.03?

Back

0.12

Front

What is the importance of the decimal point in calculations?

Back

The decimal point indicates the value of digits in a number, determining their place value and ensuring accurate calculations.

Front

If Sarah jogged 4.8 miles each day for 22 days, how many miles did she jog in total?

Back

105.6 miles

Front

What is the result of 15.38 + 6.25 + 12.04?

Back

33.67