Page 112 - steps 3b.pdf

DRM 111

~ Number patterns II II II II II II 3b:37

• QJQJ0QJQJ0[ :2 :· 1 11 •

f-+--+-+--f--+-I

So 121 is a square number.
I--+-I--+-H-H-H-H 11
Use a calculator to help with rn . f--+-+-+--+--+- ~

OJ The numbers on these calculator displays are also square numbers.
Write the pair of equal numbers you need to multiply together to make
the square numbers.
a 000000['---_22 ___ 5. ]

b 000000['---_52 ___ 9. ]

c 000000['---_96 ___ 1.

d 000000 [ _____ 6'7 ___ 6.

e 000000 [ _____ '78 ___ 4.

f 000000 ['---_1_08 ___ 9.

00 Explain what you did to find out.

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@] Without a calculator, try to work out the missing square numbers.
Show your workings-out.

a13x13=

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-I Finding square roots by 'trial and improve' calculating
Name
three-digit square numbers.
Date Materials: calculator
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© HarperCollinsPublishers Ltd 1997 STEPS 3b Differentiation Pack