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Computing Lengths warm up

Computing Lengths warm up

Assessment

Presentation

Mathematics

6th - 7th Grade

Hard

CCSS
7.G.A.1, 6.RP.A.3C

Standards-aligned

Created by

Veronica Riker

Used 5+ times

FREE Resource

3 Slides • 9 Questions

1

Computing Lengths warm up

Find the percent (yes, again!)

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2

Example -- find percent of....

  • What is 46% of 130?

  • 46% = 0.46

  •  0.46×130=59.80.46\times130=59.8  

3

Multiple Choice

What is 84% of 9 miles?

1

756 miles

2

93 miles

3

7.56 miles

4

75 miles

4

Multiple Choice

What is 154% of $3,500?

1

$3,654

2

$5,390

3

$530.90

4

$3,346

5

Multiple Choice

What is 800% of 22 minutes?

1

176 minutes

2

822 minutes

3

16,700 minutes

4

778 minutes

6

Find the scale factor as a percent

  • Divide corresponding sides scaledoriginal=yx\frac{scaled}{original}=\frac{y}{x}  

  •  147=2\frac{14}{7}=2  

  •  126=2\frac{12}{6}=2  

  •  2010=2\frac{20}{10}=2  

  • SCALE FACTOR = 2 = 200%

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7

Multiple Choice

Question image

What scale factor is used to go from rectangle 1 (6 inches wide) to rectangle 2 (12 inches wide)?

1

50%

2

200%

3

12%

4

160%

8

Multiple Choice

Question image

What is the scale factor from the small fry to the large fry?

1

3%

2

180%

3

33.33%

4

300%

9

Multiple Choice

Question image

A 25 foot palm tree is drawn scaled down to 1 foot. Will the scale factor be greater than, equal to, or less than 100%?

1

Greater than 100%

2

Less than 100%

3

Equal to 100%

4

It is being enlarged

10

Multiple Choice

Question image

A 25 foot palm tree is drawn scaled down to 1 foot. What is the scale factor?

1


125=0.04=4%\frac{1}{25}=0.04=4\%

2

251=25=25%\frac{25}{1}=25=25\%

3

251=25=2500%\frac{25}{1}=25=2500\%

4

100%

11

Multiple Choice

Question image

The zebra on the left is being enlarged to the zebra on the right. Will the scale factor be greater than, equal to, or less than 100%

1

Scale Factor > 100%

2

Scale Factor < 100%

3

Scale Factor = 100%

4

Zebras can't be scaled

12

Multiple Choice

Question image

The eyes of the zebra on the left are 3 .5 cm apart. If the scaled zebras eyes are 5.6 cm apart, what is the scale factor?

1

2.1 cm

2

210%

3

160%

4

62.5%

Computing Lengths warm up

Find the percent (yes, again!)

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