Download presentation
Presentation is loading. Please wait.
Published byMildred Willis Modified over 6 years ago
1
Burlish Park Primary Calculation workshops Autumn 2016 Learning goals:
To share our written calculation methods. To explain and show how we approach this in school. To let you try them out.
2
How many tigers can you see?
3
Maths mind-set – Youcubed week
It’s not true that some people are good at maths and some people are not. Anyone can get to the highest level in maths. Everyone is a maths person. When you learn something your brain grows. When you make a mistake you learn and your brain grows. The more we work the brain the more it grows.
4
Can I do this in my head?
5
Do I need to use jottings?
6
Do I need an expanded or a compact method?
7
Do I need a calculator?
8
Place value knowledge is essential for a lot of calculation methods!
Knowing the value and meaning of Thousands, Hundreds, Tens and Ones
10
Objects and pictures If I have 7 and then 3 more, how many altogether?
10
11
One more than any given number
What is one more than 13? 14
12
Count on from the largest number 8 + 7 = 15
13
Count on in tens = 58
14
Count on in tens efficiently 48 + 36 = 84
15
Partitioning = 68 = 68 = 60 3 + 5 = 8 = 68
16
Expanded written method 64 + 32 = 96
60 + 4 = 96 6 4 + 3 2 6 90 96
17
Formal method without carrying
6 4 9 6
18
Formal method with carrying
19
Formal method with decimals
21
Objects and picture 7 – 2 = 5 What do I get if I take 2 away from 7?
Answer = 5
22
One less than any given number 10 – 1 = 9
What is one less than 10? Answer = 9
23
Counting back in ones from a given number 14 – 5 = 9
24
Counting back in tens from a given number 58 – 30 = 28
25
Counting back efficiently 76 – 45 = 31
26
Counting on to find small differences 231 – 198 = 33
27
Expanded written method without exchanging 78 – 22 = 56
70 + 8 20 + 2 = 56
28
Expanded written method with exchanging 73 – 27 = 46
becomes = 46
29
Formal written method without exchanging 1 15 with exchanging
31
Pictures and objects involving doubling
3 shoes here and 3 shoes there. How many altogether?
32
Groups of 2, 5 and 10 using arrays
33
Repeated addition using a number line 6 x 5 = 30
34
Partitioning 13 x 5 = 65 10 x 5 = 50 3 x 5 = 15 = 65
35
Grid method 13 x 8 = 104
36
Expanded short multiplication 36 x 4 = 144
x 4 24 (4 x 6 = 24) (4 x 30 = 120) 144
37
Formal short multiplication 36 x 4 = 144
38
Formal short multiplication 56 x 27 = 1512
40
Objects and pictures Share the oranges between two people.
41
Sharing If I share 6 into 2 equal amounts, how many are in each group?
42
Grouping How many groups of 2 can I make out of 8?
The answer is 4
43
Using arrays How many groups of 2?
5 groups of two
44
Grouping using a number line 30 ÷ 5 = 6
How many jumps of 5 make 30? Answer = 6
45
Formal written method without remainders 24 ÷ 3 = 8
46
Formal written method with remainders 25 ÷ 3 = 8 r1
47
Formal written method (long division) 496 ÷ 11 = 45 r1
48
School website Visit
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.