Multiplication with decimals

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) means adding 3 four times (3 + 3 + 3 + 3).

Tags

CCSS.3.OA.A.1

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, 0.5 is a decimal that represents 5 tenths.

Tags

CCSS.4.NF.C.6

Front

How do you multiply a whole number by a decimal?

Back

To multiply a whole number by a decimal, multiply as if there were no decimal, then count the total number of decimal places in both numbers and place the decimal point in the product accordingly.

Tags

CCSS.5.NBT.B.7

Front

Estimate the product of 9.94 and 6.6.

Back

The estimate is 70.

Tags

CCSS.5.NBT.B.7

Front

What is the product of 63.9 and 7?

Back

The product is 447.3.

Tags

CCSS.6.NS.B.3

Front

If Babo bought 15 bottles of orange juice at $2.43 each, how much did he spend?

Back

Babo spent $36.45.

Tags

CCSS.7.EE.B.3

Front

What is the product of 0.07 and 0.3?

Back

The product is 0.021.

Tags

CCSS.6.NS.B.3

Front

Calculate the product of 2.9 and 4.9.

Back

The product is 14.21.

Tags

CCSS.6.NS.B.3

Front

What is the importance of estimating products?

Back

Estimating products helps to quickly assess the reasonableness of an answer and can simplify calculations.

Tags

CCSS.4.NBT.B.5

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting its value to make it simpler while keeping it close to the original value. For example, rounding 2.43 to the nearest whole number gives 2.

Tags

CCSS.5.NBT.A.4