Page 88 - Math Smart - 7

In this chapter 4.2.4 Divide whole numbers and
Pupils should be able to:
decimals by 10,100 and 1000
• divide whole numbers
and decimals by 10,100
and 1000
Investigate

Jane is training for a cycling race. She needs to cycle 1832 km in
10 weeks. How many kilometres should she cycle per week (assuming
she cycles the same distance each week)?
To calculate this, Jane needs to divide 1832 by 10. Look at
the table to see what happens when we divide a whole number by 10.

v 10 1\ 8\ 3\ 2~~~. •
^8 ^3 •

Fill In the blanks.
a) When we divide 1832 by 10, the digit moved from the hundreds
column to the tens column,
b) When we divide 1832 by 10, the digit 2 moved from the
column to the column.

So when we divide a number by 10, each digit moves one/two/three*
places to the left/right* in the place-value table. This makes a number
greater/smaller*.

If Jane wants to cycle 1832 km in 100 weeks, how many kilometres
should she cycle per day (assuming she cycles the same distance each
day)?
Look at the table to see what happens when we divide a whole number
by 100. ^1

o
o
1
3
2
Fill in the blanks, • ""8
a) When we divide 1832 by 100, the digit _ moved from the
hundreds column to the units column.
b) When we divide 1832 by 100, the digit 2 moved from the
column to the column.
So when we divide a number by 100, each digit moves one/two/three*
places to the left/right* in the place-value table. This makes a number
greater/smaller*.

Decimals