Numbers, units and arithmetic

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# 1.3.1 Try some yourself

## Activity 2

Write each of the following three numbers in numerals and then place them in ascending order:

• eight hundred and eight thousand

• two million and twenty-four

• nine thousand nine hundred and ninety-eight

### Answer

1 Written in numerals, the numbers are:

808 000,   2 000 024,   9 998

So, in ascending order, we have:

9 998,    808 000,   2 000 024.

## Activity 3

Multiply 2490 by 100.

### Answer

2490 × 100 = 249 000

Notice that the digits have moved 2 places to the left and two zeroes have been added at the right.

## Activity 4

Now try to answer these questions:

• (a) Place the following numbers of votes in an election in order, with the smallest first:

9 999,   5 001,   49 020

• (b) Multiply 9 494 by 100.

### Answer

3 Your answers should be:

• (a) 5 001,   9 999,   49 020.

• (b) 949 400.

MU120_4M1

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