lo to understand the order of operations (bidmas) 10-jan-16 starter activity look at the four...
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![Page 1: LO To understand the order of operations (BIDMAS) 10-Jan-16 Starter Activity Look at the four questions. In your pairs, decide which answer is correct](https://reader035.vdocuments.us/reader035/viewer/2022081603/5697c0221a28abf838cd3aa5/html5/thumbnails/1.jpg)
LO To understand the order of operations (BIDMAS)
21 Apr 2023
Starter Activity
Look at the four questions. In your pairs, decide which answer is correct. You must give a reason for your answer.
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Starter Activity – Think / Pair / Share
6 + 7 x 2 =
2 x 6 + 10 ÷ 2 =
35 – 20 ÷ 5 + 6 =
24 + 8 ÷ 4 + 7 =
20 or 26?
11 or 17?
37 or 9?
33 or 15
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BIDMAS – A quick Reminder
BID MA S
RACKETS
NDICES
IVISION ULTIPLICATION
DDITION UBTRACTION
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Mini Whiteboard
Activity
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Can you help Chief Clancy Wiggum work out who?
Someone in Springfield has robbed Kwik – e- mart?
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You will have only 15 seconds to solve each clue…………..
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Solve 3 + 4 x10
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Solve (3 + 4) x 10
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Solve: 5 +2 x 3 + 1
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Solve: (5 +2) x 3 + 1
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Solve: (5 +2) x (3 + 1)
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Solve: 5 +2 x (3 + 1)
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Solve: 6 + 9 ÷ 3
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Solve: (6 + 9) ÷ 3
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Solve: 12 – 3 + 25
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Solve: 4 +{(7 - 4) x 2} 2
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Now add up all the answers to identify the thief from the following
gallery…..
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89170
209184
219
276
478
134
Homer Simpson
Dr. Hibbert
Side Show Bob
Smithers
Ned FlandersKrusty
Grandpa Patty
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Did you correctly identify the robber?
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3 + 4 x10 = 43(3 + 4) x 10 = 70
5+2x3+1 = 12(5+2)x3+1 = 22
(5+2)x(3+1) = 28
Solutions
5 + 2 x (3 + 1)= 136 + 9 ÷ 3 = 9
(6 + 9) ÷ 3 = 512 -3 + 52 = 34
22 +62 = 40
Total of all solutions: 276
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Support - TaskDecide whether each of the statements below is true or false. If you think the statement is false you must say what you think the correct answer is.
(a)2 + 3 x 5 = 25
(b)4 x 5 + 2 = 22
(c)15 – 2 x 6 = 3
(d)3 + 4 x 2 = 14
(e)20 – 10 ÷ 2 = 15
(f)8 ÷ 2 + 3 = 7
(g)6 - 1 + 3 = 2
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Calculation Target
2 + 3 x 4 + 5 29
2 + 3 x 4 + 5 45
2 x 3 + 4 x 5 26
2 x 3 + 4 x 5 46
2 x 3 + 4 x 5 50
2 x 3 + 4 x 5 70
2 + 3 x 42 80
2 + 3 x 42 146
2 + 3 x 42 196
2 + 3 x 42 400
Main Task
Show how you can reach each target by adding brackets to the calculations.
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Extension Task
Look at the diagrams opposite and the calculations and solutions. on the next page.
Underneath each diagram write the calculation / calculations that it represents.
You should also write the solution.
Some of the solutions are missing, you must work these out.
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Calculations Solution
1445.54948143.5
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Plenary
The answer is 8, what is the question?
Easier Challenge
Include + and – in your calculation.
Harder Challenge
Include x, ÷ and brackets in your calculation.
Hardest Challenge
Include x, ÷ , brackets and indices in your calculation.