One-tenth is one part in ten equal parts.

Multiply tenths with whole numbers

Maths

In this unit pupils will explain the effect of multiplying and dividing a number by 10, 100 and 1,000 and use their knowledge of multiplying decimal fractions by whole numbers to solve measures problems. In the future unit pupils will apply memorised unit conversions to convert between units of measure. They will solve measures problems involving different units including imperial units.

In the prior unit pupils calculated with decimal numbers using column addition and subtraction. In this unit pupils will explain the effect of multiplying and dividing a number by 10, 100 and 1,000 and use their knowledge of multiplying decimal fractions by whole numbers to solve measures problems.

Calculating with decimal fractions

What comes next in this sequence? 0.8, 0.9, 1.0, {{ }}?

If 7 × 8 = 56, what does 7 × 0.8 equal?

Lucas is making a line of marbles. Each marble is 0.8 cm long. How long could it be? 

Sofia has a blue ribbon that is six metres long. She also has a red ribbon that is two-tenths times the length of the blue ribbon. How long is the red ribbon? {{ }} m

Continue this sequence:
8 ones, 9 ones, 10 ones, ___ ones

Match the equation to the missing factor.

This lesson will soon be taken down.

Multiply tenths with whole numbers

Lesson outcome