decimals day 2 multiply and divide decimals. do not line up decimals multiply with first number,...

Decimals Day 2

Multiply and Divide Decimals

DO NOT line up decimals

Multiply with first number, then

continue with next number

Place decimal point in answer by

adding how many numbers are after

the decimal point in the problem

2 . 4 0 . 7

86

2

1.

0 . 7 6 3 1 . 2

62

1

5

1

1

.+ 3670

651900

3 . 6 2 5 0 . 3 5

5

2

2

1

1

3

81

.+ 05781 0

57861 2

Move both decimals to right so

number you are dividing by doesn’t

have a decimal, adding 0 for holes

Divide

Place decimal point directly above

where decimal was moved

6 2 52 5 ..

6 2 52 5 ..2

5 01 2

.

5

5

1 2 50

5 40 9 .. 0

5 4 096

5 4 0 0

0

00

0 320 125 .. 0

3 2 01252

2 5 07 0

5

55

.

.0

0267

0

0

6

0570

A letter that represents a number

Replace letters with numbers

Use parenthesis

Simplify

(5.3) – 3

5 . 3 3 . 0–

32 .

3(5.3)

5 . 33951 .

5 3 . 31

32 3

7.

2 12

0

0

6

1 82

06

01 8

2

AverageAdd the #s, then divide by how many numbers there are

5 . 2

3+

4

99 .

. 1 3.

9 3 . 93

90 9

3.

90

1 . 2

2

+

5

613 .

. 3 1.

13 4 . 63

121 6

4.

1 60

6 8.

1

How many times a number is being multiplied by itself

(5)(5)

25(2)(2)(2)

8

7

1 . 1 1 . 1

11

.+ 011

121

Name Game• 1st person says name and what they

made• 2nd person repeats the 1st persons name

and object, then says their own name and object

• 3rd person repeats 1st and 2nd and then says their own name

• This continues until the last person says everyone's name and object