Maths 1A number

Give the value of the digit 5 in the following numbers.

a) 123.50 b)510462

• 000.5

• 000.50

• 0.5

Arrange the following numbers in ascending order,from the smallest to the largest.

7.4 7.295 7.36

Write the following in numerals. a)3.18 million / b) 3.18 billion

Answer explanation

a) 3180000 = 3.18 × 1000000

b) 3 180 000 000= 3.18 × 1000 000 000

Round 345.162km to

a) 1 decimal place

b) 2 decimal place

C) the nearest 10km

Answer explanation

a)345.162 = 345.2

b)345.162= 345.16

C) 345.162= 35

Round 1237.50 to

a)1 significant figure

b) 2 significant figure

C) 3 significant figure

Answer explanation

a) 1237.50= 1000

b) 1237.50= 1200

C) 1237.50= 1240

Round 0.0625 km to

a) 1 significant figure

b) 2 significant figure

Answer explanation

a) 0.0625= 0.1

b) 0.0625= 0.06

The following are the temperature in c,over 6 days in a city in japan.

3 -4 2 -1 4 0

Arrange the temperature in descending order

The following are the average temperature in c, over 5 days in a town.

- 0.2 -1.2 -0.8 -1.1 -0.7

Arrange the temperature in descending order

Round the following values to 2 significant figure

a) -12.50 b)-69.4

Answer explanation

a)-12.50= -13

b) -69.4= -69