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BELLRINGER (DAY 71). p.396-397. 6/9.6 = 9/14.4 2.2/4.4 = 5.5/11 3.6/3 = 17.28/14.4 108 times 9 min 7.5 g 70 CDs 30,000 females 7.5 miles Yes No No Yes Yes Varied Yes, because it’s 7 times larger About 44.8 cm. False True 15/4 = 9/2(6/5) (13)-3/16 =5/8 3/4 = (9)/(9) +3

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BELLRINGER (DAY 71)

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p.396-397

• 6/9.6 = 9/14.4

• 2.2/4.4 = 5.5/11

• 3.6/3 = 17.28/14.4

• 108 times

• 9 min

• 7.5 g

• 70 CDs

• 30,000 females

• 7.5 miles

• Yes

• No

• No

• Yes

• Yes

• Varied

• Yes, because it’s 7 times larger

• About 44.8 cm

• False

• True

• 15/4 = 9/2(6/5)

• (13)-3/16 =5/8

• 3/4 = (9)/(9) +3

• 2/(-4) = 5/(-4)-6

• 9n = -54; -6

• n/2.5 = 7.2; 18

• 2/9 = 6/27

• 49/28 = 7/4

• 3/11 = 30/110

• 21/56 = 3/8

• 8.68 ft2

• 1.072 m2

• 78.288 in2

• A

• 10 students

• 70

• 5/2 = 25/10

• 2/8 = 3/12

• 5/20 = 3/12

• 8/6 = 12/9

• Cross-multiplied wrong; 4/9=8/18

• A

• Cross-multiply; algebra; equivalent ratios

• 9/2 = 36/8

• 21/24 = 7/8

• 30/6 = 35/7

• 3/21 = 4/28

• 4/8 = 14/28

• 6.8/17 = 2/5

• 7/4 = 3.5/2

• 7/10 = 5.6/8

• 20/6.25 = 16/5

5

y x

1 & 2

millimeter

36%

9/25

8 dozen

Take a stand if…

You have ever spent Christmas on vacation.

You know what one-half plus two and one-half is

You get up before 7am on Christmas morning

You know what twenty-three and six hundred seventy-four thousandths is rounded to nearest tenth

You have ever opened your presents before Christmas and wrapped ‘em back up again so nobody would notice

You know what x is in the equation x plus 6 equals fifteen.

Vocabulary

percent

A __________ is a ratio of a number to 100.

Write the following as ratios:

24% =

45% =

63% =

6/25

9/20

63/100

Writing fractions/ratios as %

Make an equivalent fraction/ratio with denominator as 100

For example:

10/25 =

3/20 =

7/10 =

40/100

40%

15/100

15%

70/100

70%

7900

10 1

1200

4 1

630

1

50

1

Finding a percent of a number

Convert the % to a fraction and multiply to the base (original number)

For example:

70% of 900

25% of 200

90

1

50

1