Question

Arrange the numbers vertically and add
350 2254 14450
(e) 350 1678 10341
(8) 440117782131
(1) 70000 708 9103
(b) 1126 567 + 1232
(d) 4220_12913 + 1463
(1) 20940 78 +56703
Ch) 900 + 8742 + 19361
085721 + 1008 + 2061​

Answer 1

Answer:

All primary teachers need to review, consolidate and build on children’s developing mental calculation

skills throughout Key Stages 1 and 2. To help your planning, the progression in mental calculation with

whole numbers, including the recall of number facts, and fractions, decimals and percentages, is set out

for you on the next few pages.

The following tables provide further details to exemplify the expectations in the Primary Framework for

mathematics.

Addition and subtraction

Recall:

Children should be able to

derive and recall:

Mental calculation skills:

Working mentally, with

jottings if needed, children

should be able to:

Mental methods or strategies:

Children should understand

when to and be able to apply

these strategies:

Year 1

• number pairs with a total of

10, e.g. 3 + 7, or what to add

to a single-digit number to

make 10, e.g. 3 +  = 10

• addition facts for totals to at

least 5, e.g. 2 + 3, 4 + 3

• addition doubles for all

numbers to at least 10,

e.g. 8 + 8

• add or subtract a pair of

single-digit numbers,

e.g. 4 + 5, 8 – 3

• add or subtract a single-digit

number to or from a teens

number, e.g. 13 + 5, 17 – 3

• add or subtract a single-digit

to or from 10, and add a

multiple of 10 to a single-digit

number, e.g. 10 + 7, 7 + 30

• add near doubles, e.g. 6 + 7

• reorder numbers when

adding, e.g. put the larger

number first

• count on or back in ones,

twos or tens

• partition small numbers, e.g.

8 + 3 = 8 + 2 + 1

• partition and combine tens

and ones

• partition: double and adjust,

e.g. 5 + 6 = 5 + 5 + 1