Unit 5 – Multiplication and division
Solve 96 ÷ 4 in two different ways. The answer will be
1
than 20 because
×
=
.
96 ÷ 4
÷ 4 =
÷ 4 =
4
9
6
Which method did you prefer for this calculation? Why? Remember that you can also divide by four by halving and having again.
1 Solve these. Remember to make an estimate first. Which methods will you use? Convince your partner. (a) 81 ÷ 9 (d) 54 ÷ 6 (b) 54 ÷ 3 (e) 84 ÷ 4 (c) 96 ÷ 8 (f) 99 ÷ 9 What do you notice about your answers to (b) and (d) ? Explain why. 2 Name uses bricks of an equal height to build a tower. The tower is 72 cm high. How many bricks does she use when each one is: (a) 9 cm high? (b) 3 cm high? (c) 8 cm high? (d) 4 cm high?
77
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04/05/2022 15:50
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