Welcome to our Upper KS2 meeting 0n Progression in Calculations.

Welcome to our Upper KS2meeting 0n

Progression in Calculations

Understanding and Using Calculations

For all calculations, children need to:

Decide on the most appropriate method i.e. mental, mental with jottings, written method or calculator

Approximate before calculating and check whether their answer is reasonable.

Facts need to be learnt off by heart

Tables – Vital for multiplication, division,

fractions, percentages, measures and problem

solving. Doubles - both whole and decimal

numbers. Halves – both whole and decimal

numbers. Need to practise counting up and

down in different amounts.

Grid Method

7

10 6

70 42

7042

112+

16 x 7 =

Grid Method

600100 90 15805

+

x 20 3

30 600 90

5 100 15

Children have to develop their understanding of related facts.

23 x 35=

Show Video 1

12 2.7+ 0.06 14.76

Once children are confident at grid method they will move on to column multiplication.

Have a go at solving this multiplication using the grid method.

54.3 x 4

10x

-4-4-4-4-4-4-4-4

-4

-4-4-42x

48 ÷ 4 = 12

Division by Chunking

Recall of multiplication tables helps make this method more efficient, e.g. 72 ÷ 3.

Division by Chunking

e.g. 196 ÷ 6

Watch Video of HTU ÷ TU

1 x 7 = 72 x 7 = 145 x 7 = 3510 x 7 = 70

Have a go at solving this division using the chunking method.

96.8 ÷8

Watch Video to find the answer

Applying what you know

73 children and 8 adults are going on a school trip. How many buses do they need to hire if buses have 25 seats (not including the driver’s seat!)

I have saved £230. A train ticket costs £50. How many tickets can I buy.