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Unit 1 | Algebra

Unit 2 |Graphs

Page 1 | Straight line graphs

Unit 3 |Geometry and Measure

Page 2 | Symmetry

Page 3 | Coordinates

Page 4 | Perimeter, Area, Volume

Page 5 | Circle geometry

Page 6 | Measurement

Page 7 | Trigonometry

Page 8 | Pythagoras

Page 9 | Angles

Page 10 | Shapes

Page 11| Time

Page 12 | Locus

Unit 4 | Numbers

Page 1 | Speed, Distance and time

Page 2 | Rounding and estimating

Page 3 | Ratio and proportion

Page 4 | Factors, Multiples and primes

Page 5 | Powers and roots

Page 6 | Decimals

Page 7 | Positive and negative numbers

Page 8 | Basic operations

Page 9 | Fractions

Page 10 | Percentages

Unit 5 | Statistics and Probability

Page 1 | Sampling data (MA)

Page 2 | Recording and representing data

Page 3 | Mean median range and mode

Page 4 | Standard deviation

Unit 4 | Calculus

Multiplication Calculations

There are many different ways of multiplying numbers together. If you know your multiplication tables, this will be much easier. Mental methods such as multiplying by an easier number and then halving to get the answer or breaking one of the numbers down into tens and units and multiplying separately can be very helpful.

Example 1 :

If we want to do 67 x 5, we can find the answer quickly by doing 670 x 10 then halving the answer

If we have a question like 12 x 22, we can break 22 down into 20 and 2, then do 12 x 20 and 12 x 2.

For harder questions, it might be better to use a written method of multiplication instead.

Example 2 :

Let’s say that the sum we’ve been given is 164 x 82

We’ll use the grid method to find the answer first  We can also use a column method for the multiplication Remember when multiplying decimals that you can still use multiplication facts; you just have to divide them by ten or a hundred etc depending on the decimal.

Example 3 :

If you were given the question ‘0.6 x 8 =?’, we can use our times tables for this.

We know that 6 x 8 = 48, therefore all we have to do is divide the answer by ten because 0.6 is ten times smaller than 6. So, the answer is 4.8

Multiplication Calculations Exercise  1) Add in the missing values:

6×13 = ×8=64 2) What number when multiplied by 4 equals 52? 3) Look at this question : 7×3 =?

Find two the number which give the same answer
× 4) Fill the multiplication grip  5) A below uses six boxes of eggs to make large cake.
Eggs are padded in boxes of nine.
How many eggs does the backet use? 6) A school has hired 6 minibuses to take children on a trip.
Each mini bus can hold 28 children.
How many children can travel in total? 7) Calculate 378×26 = 8) Sam know that 28 × 14 = 392

Suggest how he know the answer to 14 × 14 without working out the multiplication . Previous      1 2 3 4 5 6       Next

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