Multiplication with Decimals

Which expression matches the picture?

• 6 x 2

• 2 x 0.3

• 3 x 0.2

• 0.6 x 3

Which equation is represented by the model?

• 3 x 17 = 0.51

• 3 x 0.17 = 0.51

• 0.3 x 0.17 = 0.51

• 3 x 17 = 51

Which equation is represented by the model?

• 3 x 0.8 = 2.4

• 3 x 8 = 24

• 3 ÷ 0.8 = 2.4

• 3 ÷ 0.8 = 24

What is the equation for the model?

• 0.28 x 5 = 1.4

• 28 x 5 = 140

• 0.28 x 5 = 1

• 28 x 0.5 = 14

A bakery sold 125.5 loaves of bread on Monday and 132.75 loaves on Tuesday. If each loaf costs $2.50, how much total revenue did the bakery earn from the loaves sold on these two days?

• $646.25

• $324.50

• $647.50

• $645.00

Answer explanation

Total revenue = (125.5 + 132.75) * $2.50 = $646.25. Therefore, the correct total revenue earned by the bakery is $646.25.

Ryder was the only person to complete the problem correctly. Explain why Ryder is correct? Select the THREE options that Ryder did correctly.

• He wrote 4 under 2.68

• He wrote 2.68 under 4.

• He regrouped. If the top digit is smaller than the bottom digit.

• He did not regroup. If the top digit is smaller that the bottom digit.

• He wrote enough digits after the decimal place to line up digits to the same place value.