Page 44 - steps 3b.pdf

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• Temperatures . • • • • • • • Mostly x and + 3 • • • • • •
~;1~)t4~~ OJ c. +100 Look carefully at Polly's 4-pointed star 12 -:-3=4- 3x4-=I2. ~;~~)r;~~
-----
Here are parts of 6 thermometers.
to see how she used the numbers )(
. Ii}
+90
Rules 1.2
• She hod to pol a x 0' + ';9n at evecy come,. , . . •.
+80
• She had to put one 3 at every corner. 4-x3=-12.. 12.-:-4--=3 I
OJ
+70 Make up more stars like Polly's w ith these numbers at the centre.
A~:IIBIH Ic~:IID~~ IEflllFf~l +60 []] Make up six x and + stars using only these numbers. f 18 rn
a 24
c 27
d 21
b 15
e 30
+50 ~ Ell w .. &~ @J~
Write the temperature shown on:
a 3 X 8 = 24
+40
thermometer A thermometer B thermometer C This number line shows how 2 x 7 and 7 x 2 are different.
thermometer D thermometer E thermometer F. 8 X 3 = 24
rn []] Write which of the temperatures: +30 24 + 3 = 8
a is the hottest b is the coldest +20 24 + 8 = 3
A +4°e B ooe c are above 0° C d are below 0° C.
+10 @] Design number lines to show how these are different. b 3x5= 15
C -3°C D - l oe @] Find the finishing temperature. a 3 x 7 and 7 x 3 b 9 x 3 and 3 x 9 5x3= 15
Freezing point of water
r- ---, - 15+3=5
E +2°e F -4°C starting temperature change finishing temperature
-10 CHALLENGE 15+5=3
a -Soc 1° C warmer
Suzi bought nine monsters, c 3 X q = 27
00 b +3° C 3° C warmer -20 three at 18p each, three at 24p each q x 3 = 27
and three at 33p each.
C -6° C 1° C cooler -30 Work out in your own way
a A is the hottest what she paid for them 27 + 3 = q
d -2° C 2° C warmer and her change from £5. 27 + q = 3
b£iJf?e coldest
e D' C 2° C cooler ~ ° C
d 3x7=21
c A,E
m I STEPS 3b:331 I STEPS 3b:34! 7 x 3 = 21
d C,D,F 21 + 3 = 7
21 + 7 = 3
00 00 e 3 x 10 = 30
10 x 3 = 30
a 3 X 7 = 21 30 + 3 = 10
starting finishing
temperature change temperature I. 30 + 10 = 3
• I
a 1 2 3 4 5 6 7 8 q 10 11121314151617181qZ>21 22Z32425262728 f 3x6= 18
a -5°C 1°C warmer -4°C
6x3= 18
b +3°e 3°C warmer +6°e 7 X 3 = 21 18 + 3 = 6
c -6°C 1°C cooler -7°C b 3 X q = 27 18+6=3
d -2°C 2°C warmer ooe • I I.
a 1 2 3 4 5 6 7 8 q 10 11 12 13 14 15 16 17 18 1q 20 21 22 Z3 24 25 26 27 28 00
e ooe 2°C cooler -2°C
Open: making up six
q X 3 = 27
stars using only 2, 3, 5,
Challenge Total cost: £2.25; change from £5: £2.75 (1/3 a,b) 6, 1 0, 15, 30, qO.