Adding real numbersPage 1

WATCH ALL SLIDES

Slide 1 sliderbase.com

Slide 2 Algebra tiles can be used to add or subtract integers.

Remember integers are

.

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Slide 3 Example 1:

Use algebra tiles to represent

=

=

Use algebra tiles to represent

=

=

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Slide 4 Neutral pairs have a value of _.

zero

=

0

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Slide 5 Example 2:

A. Use algebra tiles to represent

and then cross out any neutral pairs.

+

= =

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Slide 6 B. Use algebra tiles to represent

and then cross out any neutral pairs.

=

=

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Slide 7 C. Use algebra tiles to represent

and then cross out any neutral pairs.

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Slide 8 D. Use algebra tiles to represent

and then cross out any neutral pairs.

=

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Slide 9 E. Use algebra tiles to represent

and then cross out any neutral pairs.

There are no

neutral pairs

=

1

2

3

4

5

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Slide 10 F. Use algebra tiles to represent

and then cross out any neutral pairs.

There are no

neutral pairs

=

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Slide 11 Rules For Adding Two Signed Numbers:

A. Signs are the same –

2.

Take the given sign

B. Signs are the different –

2.

Subtract the numbers

Take the sign of the larger number

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Slide 12 Example 3: Find each sum.

A.

B.

C.

Signs are

the same

Signs are

different

Signs are

different

Try these… Find each sum.

A.

B.

C.

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Slide 13 Example 4: Find each sum.

A.

B.

C.

D.

1.2

-12.3

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