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Textbook Answers – Addition

July 17, 2016 Comments off

Workout

Question 1:

(a) 88

(b) 48

(c)  81

(d)  103

(e)  96

(f)  103

(g)  131

(h)  177

Question 2:

(a)  687

(b)  618

(c)  991

(d)  725

(e)  1286

(f)  588

(g)  1201

(h)  1221

Question 3:

(a)  6016

(b)  7881

(c)  10229

(d)  6370

(e)  2042

(f)  7969

(g)  13312

(h)  9284

Question 4:

(a) 63335

(b) 62038

(c) 28152

Apply

Question 1: 66p or £0.66

Question 2: 181 marbles

Question 3(a): 106 kilometres

3(b): 160 kilometres

Question 4: 696 students

Question 5(a):54 + 35 = 89

5(b): 48 + 24 = 72

5(c):  563 + 371 = 934

Question 6:

(a) In the tens column, although the 1 has been carried over from the units, it has not been added to the 5 and the 7 to make 13, not 12. The answer should be 1035.

(b) When the 8, 9, 7 and the carried over 1 are added together in the tens column, it gives 25, so a 2 should be carried over into the hundreds column, not a 1. The answer should be 1356.

Categories: answers, Uncategorized

Textbook Answers – Edges, Faces, Vertices

July 17, 2016 Comments off

Workout

Question 1:

(a)  Cube: Edges = 12, Faces = 6, Vertices = 8

(b)  Cuboid: Edges = 12, Faces = 6, Vertices = 8

(c)  Triangular Prism: Edges = 9, Faces = 5, Vertices = 6

(d) Tetrahedron: Edges = 6, Faces = 4, Vertices = 4

(e)  Square based Pyramid: Edges = 8, Faces = 5, Vertices = 5

(f)  Pentagonal Prism: Edges = 15, Faces = 7, Vertices = 10

(g) Pentagonal based Pyramid: Edges = 10, Faces = 6, Vertices = 6

Apply

Question 1:

Cube: The number of edges/faces are the wrong way around. It should be 12 edges and 6 faces.

Square based Pyramid: It should have 8 edges, not 5.

Triangular Prism: It has 5 faces, not 9.

 

Categories: answers, Uncategorized

Textbook Answers – Nets

July 17, 2016 Comments off

Workout

Question 1

Snip20160717_16

Question 2

a) Cone

b) Square based pyramid

c) Cuboid

d) Cylinder

e) Triangular Prism

f) Cube

Question 3:

a)

Snip20160717_18

b)

Snip20160717_19

c)

Snip20160717_20

d)

Snip20160717_21

Question 4:

a)

Snip20160717_22

b)

Snip20160717_23

Question 5:

a)

Snip20160717_24

b)

Snip20160717_25

Apply

Question 1:

Answer.gif

Question 2:

Answer.gif

Question 3:

Mistake 1: There is no lid for the cuboid.

Mistake 2: There should be 2×2 squares on the right/left sides

Categories: answers, Uncategorized

Textbook Answers – 3D Shapes

July 17, 2016 Comments off

Workout

Question 1

Snip20160717_9

Question 2

a)   Cylinder

b)   Cuboid

c)   Cone

d)  Tetrahedron (triangular-based pyramid)

e)  Cube

f)  Square-based pyramid

g) Sphere

h) Triangular prism

Apply

Question 1:

Square based pyramid (pyramids)

Sphere (baseball)

Cylinder (can of beans)

Cuboids (dice)

Triangular prisms (toblerone bars)

Cuboid (box)

Question 2:

Shape A is a cuboid not a cube

 

Categories: answers, Uncategorized

Textbook Answers – Quadrilaterals

July 16, 2016 Comments off

Workout – Question 1

Snip20160716_32

Question 2

(a)  Kite          (b)  parallelogram          (c)  square          (d)   Trapezium

(e)  Rectangle         (f)   Rhombus

Question 3:

Snip20160716_33

Question 4:

(a)  Order 4          (b)   Order 2          (c)   Order 1          (d)   Order 2

(e)  Order 1          (f)  Order 2

Question 5:  Some trapeziums (trapezia)

Question 6:  Kites, Rectangles, Parallelograms, Arrowheads/Deltas

Question 7:  Squares and rhombuses (rhombi)

Question 8:  Squares, rectangles, Parallelograms, rhombuses (rhombi)

Question 9: Trapezium

Apply:

Question 1:  A trapezium may have no lines of symmetry, but it may also have one line of symmetry.

Question 2:

(a)  Correct – it does have four right angles

(b)  Incorrect – it has two pairs of parallel lines

(c)  Incorrect – a rectangle only has two lines of symmetry

(d)  Correct – it does have rotational symmetry of order 2.

Categories: Uncategorized

Textbook Answers – 2D Shapes

July 16, 2016 Comments off

Worksheet – Question 1:

Snip20160716_30

Question 2

(a)  Rectangle

(b)  Hexagon

(c)  Triangle (right angle)

(d)  Circle

(e)  Pentagon

(f)  Square

(g)  Octagon

(h) Semi-circle

Question 3

(a)  Pentagon

(b)  Octagon

(c)  Heptagon

Apply – Question 1

Snip20160716_31

Question 2: (There are many options, I have listed some possible answers)

Sun – Circle

Sun rays – Triangles

Stop sign – Octagon

Hula Hoop – Circle

Bus tyres – Circles

Garage door – rectangles

Question 3

(a)  Correct

(b)  Correct

(c)  Wrong – hexagon

(d)  Wrong – parallelogram (there is no such shape as a diamond!)

Categories: Uncategorized

Textbook Answers – LCM/HCF using Product of Primes

July 16, 2016 Comments off

Textbook Exercise – Workout

Question 1:

(a)  105

(b)  154

(c)  105

(d)  99

(e)  60

(f)   90

(g)  80

(h)  120

(i)   144

(j)   78

(k)  150

(l)   144

(m)  168

(n)   180

(o)  360

(p)  630

Question 2:

(a)  7

(b) 5

(c)  6

(d)  9

(e)  15

(f)   14

(g)  30

(h)  16

(i)   8

(j)   1

(k)  12

(l)   19

(m) 11

(n)  28

(o)  45

(p)  32

Textbook Answers – Apply

Question 1(a)  420

1(b)  12

Question 2:  300

Question 3:  168 seconds

Question 4:  1pm or 13:00

Question 5:  6200

Question 6:  26 and 65

Question 7:  The highest common factor of 20 and 21 is 1.

Question 8: 1200 coins each, so they have 2400 in total.

Question 9: It should be 4, since 2 x 2 = 4. Perhaps he just put the two 2’s beside each other to make 22 instead of multiplying them.

Categories: answers, Uncategorized
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