G7 Large and small units (Day 3)

Given that

1 tonne (t) = 1000 kilogram (kg)

Round 15840 kg to the nearest tonne.

____ t

Mathematical Equivalence

ON

Which prefix means one thousand?

• milli-

• centi-

• kilo-

• nano-

Answer explanation

"nano-" mans 10^-9

Which prefix means one thousandth?

• milli-

• centi-

• kilo-

• nano-

Answer explanation

"nano-" mans 10^-9

Which prefix means one hundredth?

• milli-

• centi-

• kilo-

• hecto-

Answer explanation

"hecto-" means 10²

10 kg = ____t

Mathematical Equivalence

ON

• a kilosecond

• macrosecond

• a microsecond

• a millisecond

Answer explanation

"macro-" means large

"micro-" means small and has a value of 10^-6

A small cup holds 200 mL of water and a large cup holds 300 mL.

For sports day, the organisers are allowing for 1000 small cups and 700 large cups of water to be filled from the water coolers.

How much water should be available, in kilolitres?

____kL

Mathematical Equivalence

ON

1000 kilolitres is the same as:

• 1 megalitre

• 1 gigalitre

• 1 tetralitre

A mass was recorded as 0.050 g.

This has been rounded to the nearest:

• gram

• milligram

• microgram

• nanogram

Answer explanation

There are 2 s.f.

The last 0 has a decimal place value of thousandths.
Hence, the prefix is milli-

A nanosecond is:

• one thousandth of a second

• one millionth of a second

• one billionth of a second