Multiply Decimal by Whole Number

What is the product of 3 and 0.4?

• 0.8

• 1.0

• 1.2

• 1.5

What is the first step in multiplying a decimal by a whole number?

• Multiply the whole number by the decimal as if the decimal point is not there.

• Add the decimal to the whole number before multiplying.

• Convert the decimal to a fraction before multiplying.

• Ignore the decimal and multiply the whole number by 10.

Calculate 3 × 0.38.

• 1.14

• 1.24

• 1.34

• 1.44

If you multiply 0.5 by 10, what is the result?

• 4.0

• 5.0

• 6.0

• 7.5

How do you convert a decimal to a fraction?

• Write the decimal over its place value and simplify (e.g., 0.75 = 75/100).

• Multiply the decimal by 10 and round to the nearest whole number.

• Add 1 to the decimal and write it as a fraction.

• Convert the decimal to a percentage and use that as the numerator.

What is the rule for placing the decimal point in the product?

• Count the total number of decimal places in the numbers being multiplied and place the decimal point in the product accordingly.

• Place the decimal point in the product at the end of the number.

• The decimal point should be placed in the middle of the product.

• The decimal point is not needed in the product if both numbers are whole numbers.

What is 9 multiplied by 0.4?

• 2.8

• 3.6

• 4.5

• 5.4

What is the product of 0.1 and 20?

• 1.0

• 2.0 or simply 2.

• 3.0

• 0.5

Find the product of 2 and 0.007.

• 0.014

• 0.14

• 0.0014

• 0.00014

How do you align decimal points when multiplying?

• You write the numbers vertically, aligning the decimal points, and multiply as if they were whole numbers.

• You write the numbers horizontally and add the decimal points together.

• You ignore the decimal points and multiply the numbers as they are.

• You round the numbers to the nearest whole number before multiplying.