MNU 3-04a 4 Jul 2022 4 Jul 2022 Created by Mr. Lafferty Maths Dept Created by Mr. Lafferty Maths Dept Integers Integers Integers in Context Add /Sub using Thermometer www.mathsrevision.com Add / Sub Mathematically Multiplication & Division Double Negative
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MNU 3-04a 25-Oct-15Created by Mr. Lafferty Maths Dept Integers Integers in Context Add /Sub using Thermometer Add / Sub Mathematically.
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MNU 3-04a
21 Apr 202321 Apr 2023 Created by Mr. Lafferty Maths DeptCreated by Mr. Lafferty Maths Dept
IntegersIntegers
Integers in Context
Add /Sub using Thermometer
ww
w.m
ath
srevis
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.com
Add / Sub Mathematically
Multiplication & Division
Double Negative
MNU 3-04a
21 Apr 202321 Apr 2023 Created by Mr. Lafferty Maths DeptCreated by Mr. Lafferty Maths Dept
Starter QuestionsStarter Questionsw
ww
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srevis
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.com 10% of £270Q1. Calculate
Q2. How many euros do I get for £20 if exchange rate is £1 1.5 €
Q3. What is the time difference 09:28 and 10:50
Q4. The answer to the question is 90. What is thequestion.
MNU 3-04a
21 Apr 202321 Apr 2023 Created by Mr. Lafferty Maths DeptCreated by Mr. Lafferty Maths Deptww
1.1. To be able to write down To be able to write down mathematically the addition mathematically the addition and subtraction of integers.and subtraction of integers.
1 We are learning how to write down mathematically addition and subtraction of integers.
IntegersIntegersAddition & Subtraction
MNU 3-04a
21 Apr 202321 Apr 2023 Created by Mr. Lafferty Maths DeptCreated by Mr. Lafferty Maths Dept
NegativeNumbers
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2
8
2422
20
14
1816
1210
64
0-2
-8
-24
-22-20
-14
-18-16
-12-10
-6-4
(a) 12 + 4 =
(b) 10 + (-8) =
(c) 7 - 10 =
Down -
UP +
2
-3
16
Start at 12
Go up 4
Start at 10
Go down 8
Start at 7
Go down
10
RuleAdding a negative is
the same as subtracting
“+ -” = -
MNU 3-04a
21 Apr 202321 Apr 2023 Created by Mr. Lafferty Maths DeptCreated by Mr. Lafferty Maths Dept
= -4
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(1) 3 - 7
(2) 4 + (-9)
(3) -7 - 8
(4) -2 + (-12)
(5) -5 - 25
(6) (-8) + (-9)
Examples
= -5
= -15
= -14
= -30
= -17
IntegersIntegers
Remember Rule !
MNU 3-04a
21 Apr 202321 Apr 2023 Created by Mr. Lafferty Maths DepartmentCreated by Mr. Lafferty Maths Department
Now try TJ3a
Ex 2 Ch4 (page 35)
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IntegersIntegers
21 Apr 202321 Apr 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Starter QuestionsStarter Questionsw
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2. Calculate 70% of 84
(a) 6.67 (b) 5.54 (c) 7.99
1. 99.6 + 7.27
3. Round to 1 decimal place
4. Find the value of x 5x +25 = 105
MNU 3-04a
21 Apr 202321 Apr 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.ww