Key Stage 2 Maths Aims for this session: To explore some of the - PowerPoint PPT Presentation

Draw something to prove to me that: 7 is an odd number 11 is a prime number 2 6 3 is equivalent to 9

Bar Model

3 4 of a number is 54. What is the number? ?

3 4 of a number is 24. What is the number? ? 24

3 4 of a number is 24. What is the number? ? 8 8 8 8 24

3 4 of a number is 24. What is the number? 32 8 8 8 8 24

The Four Operations

16 + 4 = 3 + 17 120 = 40 +

Find different ways of completing: - = X

Addition Step 1: Empty number line Step 2: Partitioning Step 3: Expanded column method Step 4: Column method 80

Empty Number Line 32 + 14 Bridging 10 46 + 37

Partitioning - pulling the number into bits 46 + 32

Expanded vertical method Compact vertical method Column method 235 235 + 752 + 752

Subtraction Step 1: The empty number line counting back counting up Step 2: Partitioning Step 3: Expanded column method Step 4: Column method 85

Empty Number Line counting back 34 - 12 Bridging ten 63 - 16

Empty Number Line counting forward: finding the difference 46 - 41 103 - 91

Partitioning 147 - 34 253 - 45

Expanded column method Compact column method 343 - 127 343 300 + 40 + 3 - 127 - 100 + 20 + 7

Multiplication Step 1: Empty number line – repeated addition Step 2: Partitioning Step 3: Grid method Step 4: Expanded column method Step 5: Compact method Step 6: Long multiplication 92

Empty number line 9 x 3 9 x 3

Partitioning Grid method 143 x 6 100 x 6 = 40 x 6 = 3 x 6 =

Expanded column Compact column method method 143 143 x 6 x 6

Partitioning Grid method Expanded column method 43 x 67 43 x 67 40 x 60 = 40 x 7 = 3 x 60 = 3 x 7 =

Compact method 236 x 47

Compact method 236 x 47

Compact method 236 x 47

Long multiplication explained… https://www.theschoolrun.com/what-is-long-multiplication