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• Sticker sums • • • 5 mm squared paper • Finding products • hundreds, tens and ones
baseboard, base 10
orRMC
Here are 14 rows of 6 stickers. Here is a way to help you find or check answers to problems like 23x5.
If you tear the stickers into two at the green arrow,
you will have 4 rows of 6 stickers
and 10 rows of 6 stickers.

Find the value of these pieces.
Write your answers as rriultiplic.ations.
mm I III ~m II ~~
a 7 sets of these: b 6 sets of these: c 8 sets of these:
mm

d 5 sets of these: e 4 sets of these: f 9 sets of these:
, .. ,
OJ Write about the two parts III ~~ mm
mm
each time if you tear the 1111 m In em
stickers at the red arrows.
I]] Find these products.
I]] Write which example you a 14 x 5 b 26 x 6 c 33 x 4 d 18 x 8
found hardest. Why? e 19 x 3 f 35 x 6 g 28 x 7 h 13 x 9
14x6 = 84
CHALLENGE
Fit these numbers into this frame: D D x D
@] Draw 6 more rectangles like this
on squared paper to show II 3 5
different ways of splitting the rows. (gX7) + (4~7) Try to find the 4 possible odd-numbered products.
=5~ + 2.8
=&It
rn rn 00

a (5 x 6) + (q x 6) = 30 + 54 = 84 Open: Which example was hardest a 14 b 33 c 25 a 70 b 156 c 132
x 7
x 6
b (6 x 6) + (8 x 6) = 36 + 48 = 84 and why. -- -- x 8 d 144 e 57 f 210
c (7 x 6) + (7 x 6) = 42 + 42 = 84 28 (4 x 7) 18 (3 x 6) 40 (5 x 8) g Iq6 h 117
70 (lOx 7) 180 (30 x 6) 160 (20 x 8)
d (8 x 6) + (6 x 6) = 48 + 36 = 84
q8 Iq8 200
e (q x 6) + (5 x 6) = 54 + 30 = 84 Practical: drawing rectangle to Challenge
f (lOx 6) + (4 x 6) = 60 + 24 = 84 show different ways of splitting
rows. d 38 e 47 f 32 43 x 5 = 215,
g (13 x 6) + (1 x 6) = 78 + 6 = 84 x 5 x 4 x q 23 x 5 = 115,
-- -- --
40 (8 x 5) 28 (7 x 4) 18 (2 x q) 45 x 3 = 135,
150 (30 x 5) 160 (40 x 4) 270 (30 x q) 25 x 3 = 75
IqO 188 288