Page 123 - steps 3b.pdf

• Answers 3b • • • • • • • • • • • • • • • • • 6

DRMs ql, q2, q3 DRM 100
Open X I 2 3 4 5 678 q 10
3 3 6 q 12 15 18 21 24 27 30
e DRMq4 4 4 S 12 16 20 24 28 32 36 40
Practical - check the accuracy of the scaled drawings.
DRM qS
B (3, 5)
C (6, 3)
0(7,5)
E (7, I)
F (6,2)
G(3, I)
H (1,2)
1(2, 3)

DRM q6
I A(I, 1)(2, 2)
B (2, 2) ( 4, 4)
C (5, I) (10, 2)
0(7,2) (14, 4)
E (6, 3) (12, 6)
F (7, 3) (14, 6)
G (5, 5)(10,10)
H (2, 3) (4, 6)
I (I, 5)(2,10) DRM 101
X 30 70 50 10 60 SO 20 qO 40
DRM q7 4 120 2S0 200 40 240 320 SO 360 160
I am lower than 4° C. I am higher than -1 °C 2 60 140 100 20 120 160 40 180 80
5 150 350 250 50 300 400 100 450 200
I am between 4°C and 6°C
3 qO 210 150 30 180 240 60 270 120
I am half-way between I °C and qoC
2 a 30 x 2; 3 x 20
I am 2°C lower than -3°C b 20 x 5; 50 x 2
c 50 x 2; 100
I am half-way between <!°C and -SoC
d 4 x 50; 4 x 50
I am between -2°C and -6°C
3 120: 30 x 4; 60 x 2; 40 x 3
DRM qS
DRM 102
(30 x 2) + (50 x 4) = (lOx 2) + (60 x 4)
(4 x 70) + (30 x 4) = (qO x 4) + (4 x 10)
(20 x 4) + (4 x 10) = (30 x 2) + (2 x 30)
(70 x 5) - (50 x 3) = (60 x 2) + (20 x 4)
(qO x 5) - (80 x 3) = (70 x 5) - (2 x 70)
(80 x 2) + (70 x 2) = (80 x 5) - (20 x 5)
(4 x 40) - (20 x 4) = (SO x 2) - (40 x 2)
(qO x 3) - (20 x 3) = (5 x 50) - (20 x 2)
NO x 4) - (20 x q) = (30 x 5) + (3 x 10)
(80 x 5) - (70 x 5) = (lOx I 0) - (lOx 5)

DRM 103
1 a 5. I square S b 2. I square NE c I. I square E
6. 3 squares E 3. 2 squares S 2. I square S
4. I square SE 3. I square E
5. I square N 4. I square SW
6. I square SE 5. I square S
6. 2 squares E
2 a STOP b STOP cOpen
§ ~

DRM qq
START START
Open
6. I square NE
DRM 104
Open

© HarperCollinsPub/ishers Ltd 1997 STEPS 3b Differentiation Pack