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II Different ways to m.ultiply II II II

The answer to 112 x 9 will approximate to 100 x 10 = 1000.
You can work out the actual answer to 112 x 9 in many different ways;
some are shown here.
/ 12 (JOO r/0+2) 112
1
<:---100 ~+10~2
112X9-7 r cioo >< ~ (2x1) ~
IV -7 90 CfO (Joxq)
ti roox9 Ol(Cf ~ + I~ lOO~
'!00 (loox1)
J I - I 0 0 'b I 00 8 I I

QJ Complete this sentence for each of these multiplications.
I think the answer will be about ...

a 189 x 3 b 376 x 2 c 5 x 714
d 455 x 6 e 9 x 138 f 944 x 3
g 832 x 4 h 285 x 7 i 8 x 999

C3::J Choose a way you like to work out the actual answers for QJ.

Are all your answers sensible?

[I] Half the answer cards to these multiplications are face-down.
Work out what answers are hidden on the face-down cards.
Show all your workings-out.
a I 123 10[!}0

c1 20s 10@10

e I 279 10@)0

91 574 10@10

CHALLENGE

Try to find 7 different ways to complete this .

...._•-10 [!} 0 I 936 I

I STEPS 5:181