Monday 9/20--7th Lesson Slides: 28 Slides (7th Grade)

28 Slides • 8 Questions

1

Monday 9/20--7th

Please work on warm ups

2

Steps for adding and subtracting Decimals

Don't forget to STACK your decimals and add zeros when needed.

3

Steps to Adding (And Subtracting) Fractions

If the denominators are the same, add the numerators and simplify.
If the denominators are different (unlike), find the LCD of both numbers, multiply the fractions, add, and then simplify.

4

Adding Integers Review

If the signs are the same, add as normal and keep the sign.
If the signs are different, subtract and take the sign of the bigger absolute value.

5

Subtracting Rules

Keep - Keep the first integer the same.
Change - The subtraction sign changes to an addition sign
Change - The second integer changes to its opposite.
Then add using addition rules.

6

7

Multiple Choice

Use the number line to find the sum. 3 + (-12) =

1

-9

2

9

3

-15

4

15

8

Multiple Choice

Use the number line to find the sum.
-4 + (-5) =

1

-9

2

9

3

-1

4

1

9

Multiple Choice

Which problem does not have a sum of (-4)?

1

(-9) + (-5)

2

3 + (-7)

3

(-9) + 5

4

(-3) + (-1)

10

Multiple Choice

$-\frac{7}{8}+\frac{1}{4}$

1

$\frac{5}{8}$

2

$-\frac{5}{8}$

3

$1\frac{1}{8}$

4

$-1\frac{1}{8}$

11

Multiple Choice

$-6\ \frac{1}{3}+\frac{20}{3}$

1

13

2

$-\frac{1}{3}$

3

$\frac{1}{3}$

4

-13

12

Multiple Choice

$2\ +\ \left(-\frac{7}{2}\right)$

1

$-1\frac{1}{2}$

2

$5\frac{1}{2}$

3

$1\frac{1}{2}$

4

$-5\frac{1}{2}$

13

Multiple Choice

Solve:

$-\frac{7}{10}-\frac{1}{5}$

1

9/10

2

-9/10

3

-5/10

4

5/10

14

Multiple Choice

Solve:

$16.05-\left(-4.603\right)$

1

11.447

2

-20.653

3

20.653

4

-11.447

15

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Monday 9/20--7th

Please work on warm ups

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