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Integers. Add / Subtract Integers. Double Negatives. Multiply +ve / -ve Integers. www.mathsrevision.com. Divide by +ve or -ve Integers. Starter Questions. www.mathsrevision.com. Integers. Addition & Subtraction. Learning Intention. Success Criteria.

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integers

Integers

Add / Subtract Integers

Double Negatives

Multiply +ve / -ve Integers

www.mathsrevision.com

Divide by +ve or -ve Integers

Created by Mr. Lafferty Maths Dept.

starter questions

Starter Questions

www.mathsrevision.com

Created by Mr. Lafferty Maths Dept.

slide3

Integers

Addition & Subtraction

Learning Intention

Success Criteria

  • To remember rules for adding and subtract both positive and negative numbers.
  • 1. We are learning how to add positive and negative numbers .

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  • 2. To apply rules to simple questions.

Created by Mr. Lafferty Maths Dept.

slide4

4

3

2

1

0

-1

-2

-3

Think

Thermometer

Integers

Addition & Subtraction

1 + 3 =

4

4 - 5 =

-1

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-3 + 5 =

2

-1 - 2 =

-3

Created by Mr. Lafferty Maths Dept.

slide5

Integers

Addition & Subtraction

Now try Exercise 3

Ch2 (page 14)

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Created by Mr. Lafferty Maths Dept.

starter questions6

Starter Questions

www.mathsrevision.com

Created by Mr. Lafferty Maths Dept.

slide7

Integers

Addition & Subtraction

Learning Intention

Success Criteria

  • To understand the ‘double negative’ rule for numbers.
  • 1. We are learning how to work with the ‘double negative’ for numbers.
  • 2. To simplify and solve problems using the ‘double negative’ property.

www.mathsrevision.com

Created by Mr. Lafferty Maths Dept.

slide8

Rule

“Double negative

make a positive”

- - = +

Integers

Addition & Subtraction

Double Negative

1 - (- 2) =

1 + 2 =

3

- 4 – (- 5) =

- 4 + 5 =

1

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-3 - (- 5) =

- 3 + 5 =

2

-1 - (- 10) =

-1 + 10 =

9

Created by Mr. Lafferty Maths Dept.

slide9

Integers

Addition & Subtraction

Now try Exercise 4

Ch2 (page 15)

www.mathsrevision.com

Created by Mr. Lafferty Maths Dept.

starter questions10

Starter Questions

www.mathsrevision.com

Created by Mr. Lafferty Maths Dept.

slide11

Integers

Multiplication

Learning Intention

Success Criteria

1. Understand how to multiply positive and negative numbers.

  • 1. We are learning how to multiply positive and negative numbers.

www.mathsrevision.com

Created by Mr. Lafferty Maths Dept.

slide12

With your partner can try and come up with the rules for multiplying integers

(+ve) x (+ve) = (+ve)

(-ve) x (–ve) = (+ve)

(-ve) x (+ve) = (-ve)

(+ve) x (–ve) = (-ve)

Integers

Multiplication

Multiplying Integers

2

1 x (-2) =

-2

(-2) x (-1) =

-20

(-4) x 5 =

(- 2) x (-5) =

10

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-9

(-3) x 3 =

25

(-5) x (-5) =

Same signs

= positive answer

Different signs

= negative answer

32

(-4) x (-8) =

-40

5 x (-8) =

Created by Mr. Lafferty Maths Dept.

slide13

Integers

Multiplication

Now try MIA Ex 13.1

Ch1 (page 24)

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Created by Mr. Lafferty Maths Dept.

starter questions14

Starter Questions

20o

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xo

xo

Created by Mr. Lafferty Maths Dept.

slide15

Integers

Division

Learning Intention

Success Criteria

  • 1. We are learning how to divide by positive and negative numbers.

1. Understand how to divide positive and negative numbers.

1. Apply rules to simple number questions.

www.mathsrevision.com

Created by Mr. Lafferty Maths Dept.

slide16

Integers

MNU 2-04a

MNU 3-03b

MNU 3-04a

Division

Now try MIA Ex 14.1

Ch1 (page 25)

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Created by Mr. Lafferty Maths Dept.

slide17

With your partner can try and come up with the rules for multiplying integers

(+ve) ÷ (+ve) = (+ve)

(-ve) ÷ (–ve) = (+ve)

(-ve) ÷ (+ve) = (-ve)

(+ve) ÷ (–ve) = (-ve)

Integers

Division

(-2) ÷ 1 =

-2

(-2) ÷ (-1) =

2

4

20 ÷ (-5) =

-4

(- 20) ÷ (-5) =

Same signs

= positive answer

Different signs

= negative answer

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-3

(-9) ÷ (-3) =

(-9) ÷ 3 =

3

-5

5

(-25) ÷5 =

(-40) ÷ (-8) =

Created by Mr. Lafferty Maths Dept.

slide18

Integers

Division

Now try MIA Ex 14.1

Ch1 (page 25)

www.mathsrevision.com

Created by Mr. Lafferty Maths Dept.