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Divisibilty Rules

100

Why is 3450 divisibility by 2?

Ends in a even number

200

385 is divisible by ??

5

300

Is 14430 divisible by 4? 

NO

400

What is the divisibility rule for 3?

Add up the digits and sum is divisible by 3.

500

List all number divisible by 9000.

2, 3, 4, 5, 6, 9, 10

Adding Integers

100

-4  +  -6

-10

200

(+22) + (-4)

+18

300

-5  +  16

11

400

(-8)  +  (+6)  +  (-2) 

-4

500

-6  +  -6  +  -6  + 10

-8

Subtracting Integers

100

(+3) - (+5)

-2

200

(+12) - (+20)

-8

300

(+20) - (-10)

+30

400

(-8) - (-2) + (+10)

+4

500

(+5) + (-6) - (+1)

-2

Decimals - Order least to Greatest?

100

0.5     0.005.    0.05

0.005    0.05    0.5

200

3.3     3.03     3.33

3.03, 3.3, 3.33

300

4.9    4.89    4.888...

4.888..., 4.89, 4.9

400

0.24    0.224     2.42

0.224, 0.24, 0. 42

500

88.08    88.80    88.788

88.08,  88.788,  88.80

Fractions - Order least to greatest

100

1/5      1/12

1/12, 1/5

200

34/35     5/6

5/6, 34/35

300

6/10    4/9

4/9     6/10

400

14/15    1/8   12/25     

1/8, 12/25, 14/15

500

3/5    1/18      32/33    14/30     

1/8, 14/30, 3/5, 32/33