Page 41 - STEPS MATHEMATICS 4A

Counting on and back

Playing a dice game, Tanya scored 145
and Jack scored 221.

They wanted to work out
the difference.

Tanya counted on like this: Jack counted back like this.

1 45 50 ±. 200 ± 20 22 1l£L 200 l:£j 5( 45

Difference = 76
221-^145

Count on like Tanya to find the difference between these scores.
Use as few arrows as you can.

a 365 and 440 b 150 and 235 c 237 and 320
d 115 and 209 e 456 and 543 f 609 and 697

Count back like Jack to check your answers for 1

Copy and complete this table.

This shows the score
when we played a game Scores
six times.
ZS'-f

i-U-f

(o 3lo

The player with the larger total in the difference column wins.
Who won? Show how you found out.