Page 24 - steps 4b 02.pdf

RM30

• Subtraction • • • • • • • • 4b:q •

Find the difference An activity for 2 people

You need: 4 dice 1 - 6; dice shaker
We've scored 5, 1, 3 and 2, so the
D Throw the 4 dice and decide largest number is five thousand,
together the largest 4-digit three hundred and twenty-one.
number you can make with the
scores.
D Decide the smallest 4-digit
number you can make with the
same scores.

D In your books, both of you find
the difference between the two
4-digit numbers and compare
results.

o Add together the digits in the
answer to find its digital sum.

The digital $um of 4086 i$ 9:
4 + 0 + 8 + 6 = 18 and 1 + 8 = 9.

D Repeat from the start until you have found 10 differences.

What do you notice about the digital sum each time?

Nearer 1000 A game for 2 players

o One player rolls the 4 dice
from Find the difference.
D Both players in secret write
down any two 4-digit numbers
which can be made with the
score and find the difference.
D They check each other's
answers and the player with
the answer nearer 1000 wins
a point.

D The first player with 5 points
wins the game.

~ ........ __ .; ____ • __ 4 4_ •• _ .... :_ •• ____ '- __