Canada Grade 8 Math Converting between different units

Convert 5 kilometres to metres.

• 50 m

• 500 m

• 5000 m

• 50000 m

Answer explanation

To convert kilometres to metres, multiply by 1000. Therefore, 5 kilometres is 5 x 1000 = 5000 metres. The correct answer is 5000 m.

How many grams are there in 2.5 kilograms?

• 250 g

• 2500 g

• 25000 g

• 25 g

Answer explanation

To convert kilograms to grams, multiply by 1000. Therefore, 2.5 kg x 1000 = 2500 g. The correct answer is 2500 g.

Convert 7500 millilitres to litres.

• 0.75 L

• 7.5 L

• 75 L

• 750 L

Answer explanation

To convert millilitres to litres, divide by 1000. Thus, 7500 mL ÷ 1000 = 7.5 L. Therefore, the correct answer is 7.5 L.

If the temperature is 25°C, what is it in Kelvin?

• 248 K

• 273 K

• 298 K

• 300 K

Answer explanation

To convert Celsius to Kelvin, add 273.15. So, 25°C + 273.15 = 298.15 K, which rounds to 298 K. Therefore, the correct answer is 298 K.

Convert 3 hours into seconds.

• 10800 s

• 1800 s

• 3600 s

• 7200 s

Answer explanation

To convert hours to seconds, multiply by 3600 (the number of seconds in an hour). Thus, 3 hours x 3600 seconds/hour = 10800 seconds. Therefore, the correct answer is 10800 s.

How many centimetres are there in 1.2 metres?

• 12 cm

• 120 cm

• 1200 cm

• 1.2 cm

Answer explanation

To convert metres to centimetres, multiply by 100. Therefore, 1.2 metres is 1.2 x 100 = 120 cm. The correct answer is 120 cm.

Convert 0.5 litres to millilitres.

• 5 mL

• 50 mL

• 500 mL

• 5000 mL

Answer explanation

To convert litres to millilitres, multiply by 1000. Therefore, 0.5 litres x 1000 = 500 mL. The correct answer is 500 mL.

If a car travels 100 kilometres, how many metres has it travelled?

• 1000 m

• 10000 m

• 100000 m

• 1000000 m

Answer explanation

To convert kilometres to metres, multiply by 1000. Therefore, 100 kilometres equals 100 x 1000 = 100000 metres. The correct answer is 100000 m.

Convert 2500 grams to kilograms.

• 0.25 kg

• 2.5 kg

• 25 kg

• 250 kg

Answer explanation

To convert grams to kilograms, divide by 1000. Thus, 2500 grams ÷ 1000 = 2.5 kg. Therefore, the correct answer is 2.5 kg.

How many millimetres are there in 0.03 metres?

• 0.3 mm

• 3 mm

• 30 mm

• 300 mm

Answer explanation

To convert metres to millimetres, multiply by 1000. Thus, 0.03 metres x 1000 = 30 mm. Therefore, the correct answer is 30 mm.