Unit Conversion
Ratio
Precision and time
100

Convert 4000 meters into kilometers (km)

km

100

Express "nine children to nine adults" as a simplified ratio.

1:1

100

Sara leaves home at 2:15 p.m and returns at 3:50 p.m. How long was she away?  

1 hour 35 minutes

200

How many grams are equivalent to 4 kilograms?

4,000 g

200

Simplify the ratio 600 : 400 to its lowest terms.

3:2

200

 If a measurement is 22 to the nearest integer, what is the lower bound?  

21.5

300

Which liquid measurement is equivalent to 1 cm3?

1 ml

300

Express the ratio 5 : 1000 in the form 1 : n.

1 : 200

300

Express 18 seconds to one minute as a simplified ratio.

3 : 10 (18 : 60)

400

Convert 4.5 m2 into cm2

45,000 cm2

(4.5 x 10,000)

400

Find the unknown value x in the equivalent ratio 

1 : 4 = x : 20.

x = 5

400

Write the error interval for x.

If x = 4.8 rounded to 1 decimal place.  

4.75  ≤ x < 4.85

500

Write the scale 5 cm to 10 km as a ratio in the form
1 : n.

32

500

Share $24 between Jess and Anne in the ratio 3 : 5.

$9 and $15

500

How much time passes from 19:35 on Monday to 03:55 on Tuesday?

8 hours 20 minutes

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