REVIEW multiplying and dividing - decimals and fractions

Front

What is multiplication?

Back

Multiplication is a mathematical operation that represents the repeated addition of a number. For example, 3 multiplied by 4 (3 x 4) is the same as adding 3 four times (3 + 3 + 3 + 3 = 12).

Front

What is division?

Back

Division is a mathematical operation that represents the process of splitting a number into equal parts. For example, 12 divided by 3 (12 ÷ 3) means splitting 12 into 3 equal parts, which equals 4.

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It uses a decimal point to separate the whole number part from the fractional part. For example, 0.75 is a decimal.

Front

What is a fraction?

Back

A fraction represents a part of a whole. It consists of a numerator (the top number) and a denominator (the bottom number). For example, 1/2 means one part out of two equal parts.

Front

How do you multiply a decimal by a whole number?

Back

To multiply a decimal by a whole number, multiply as if there were no decimal, then place the decimal point in the product based on the number of decimal places in the original decimal.

Front

How do you divide a decimal by a whole number?

Back

To divide a decimal by a whole number, move the decimal point in the dividend (the number being divided) to the right if necessary to make it a whole number, then divide as usual.

Front

What is the total cost of 1.8 pounds of jelly beans at $0.55 per pound?

Back

The total cost is $0.99 (1.8 x 0.55 = 0.99).

Front

What is 324.18 divided by 18?

Back

324.18 divided by 18 equals 18.01.

Front

If Ziba cuts 9.42 meters of string into 6 equal pieces, how long is each piece?

Back

Each piece is 1.57 meters long (9.42 ÷ 6 = 1.57).

Front

How do you find the cost per person when splitting a total cost?

Back

To find the cost per person, divide the total cost by the number of people sharing the cost.