Welcome GCSE Maths

Work out of lesson This week… BKSB

Jo’s maths page is here… BKBS is here…

Quick wits – Week three

Numbers Calculate -5 + 13 Calculate -7-5 Write a place value table from 1 1000 to one million Multiply thirteen by one thousand Divide 13 by one hundred Calculate 3 + 4 × 19 – 8 Calculate 2³ Calculate 3 64

BIDMAS – order of operation B rackets I dices (powers) D ivision M ultiplication A ddition S ubtration

Square/ed numbers & cube/cube root numbers You must know these for your exam… Write down the square numbers to 144 Write down the cubed numbers to 125

Rounding Discuss the differences between: Estimating Decimal places Significant figures What topic must we be confident in to complete these accurately?

Work out of lesson This week… BKSB

Jo’s maths page is here… BKBS is here…

Individual study BIDMAS and rounding questions – Choose which areas to revise depending on your own strengths and areas for development.

Reflection of the lesson What did you learn new today? Why did you learn it? How are you going to remember it?

Welcome GCSE Maths

What are the factors of 28?

Factors and multiples The factors of a number are the whole numbers that divide into it without a remainder. Find the factors of 20 Find the factors of 84 The multiples of a number can be found by multiplying that number by whole numbers. Write down the first 10 multiples of 9 Write down the first 5 multiples of 13

Write down the first 10 prime numbers A prime number is divisible by itself and 1 A prime number must have 2 factors 2,3,5,7,11,13,17,19,23,29

Product of primes/prime factor decomposition Sometimes know as prime factor trees

Prime Factor Trees 36 12 3 4 3 2 2 36 = 2 × 2 × 3 × 3 = 22 × 32 Show this alternative factor tree for 36. The prime factor decomposition is the same. 36 = 2 × 2 × 3 × 3 = 22 × 32

10 12 14 15 20 30 28 42 48 56 60 72 112 140 240 310 144 192

Answers 10 = 2x 5 12 = 2²x 3 14 = 2 x 7 15 = 3 x 5 20 = 2²x 5 30 = 2 x 3 x 5 28 = 2²x 7 42 = 2 x 3 x 7 48 = 24 x 3 56 = 23 x 7 60 = 2²x 3 x 5 72 = 23 x 3² 112 = 24 x 7 140 = 2²x 5 x 7 240 = 24 x 3 x 5 310 = 2 x 5 x 31 144 = 24 x 3² 192 = 26 x 3

Individual study Choose which areas to revise depending on your own strengths and areas for development.

Reflection of the lesson What did you learn new today? Why did you learn it? How are you going to remember it?