Question

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Help help please

1. What operation would you perform to express a measure given in the first unit as a measure in the second unit?


a) metres to centimetres _________________________


b) metres to millimetres __________________________


c) kilograms to grams ____________________________


d) litres to millilitres




2. Will each number be larger or smaller than the given number? Then fill in the blank.


larger smaller a) 3 m = ________ cm


larger smaller b) 28 cm = _________mm


larger smaller c) 2.4 km = _________m


larger smaller d) 485 mm = _________cm


larger smaller e) 35 cm = ____________m


larger smaller f) 2.4 m = _____________km


larger smaller g) 2495 mm = __________m

Answer 1

1.

a) metres to centimetres :

multiply length by 100

b) metres to millimetres:

multiply length by 1000

c) kilograms to grams:

multiply the mass value by 1000

d) litres to millilitres :

multiply volume by 1000

2.

a) 3 m = 3× 100 = 300 cm

b) 28 cm = 28 × 10 = 280 mm

c) 2.4 km = 2.4 × 1000

= 24 × 10^-1 × 10^3

= 24 × 10^2 =2400 m

d) 485 mm =485 / 10

= 485 / 10 ^1

= 485 × 10 ^-1

= 48.5 cm

e) 35 cm = 35 / 100

= 35 /10^2

= 35 × 10 ^ -2

= 0.35 m

f) 2.4 m = 2.4 / 1000

= 24 × 10 ^-1 / 10^3

= 24 × 10^-1 × 10 ^-3

= 24 × 10 ^ -4

= 0.0024 km

g) 2495 mm = 2495 /1000

= 2495 /10^ 3

= 2495 × 10 ^-3

=2.495 m