Planet Maths
Maths 3rd
4th Class
Class Photocopiable
Answers
Answers
Topic: Place Value
Page 105
1.45, 98, 101, 134, 151, 189, 223,
267, 367, 478, 488, 500
School Rocks!
2.(a) 742,247
(b) 850,058
(c) 630,036 (d) 530,035
(b) 852,258
(f) 641,146
(g) 974,479
(h) 642,246
3.(a) 40
(b)10
(c) 80
(d)40
(e) 70
(f)60
(g) 90
(h)70
(i) 60
(j)90
4.(a) 400
(b)100
(c) 400
(d)500
(e) 700
(f)700
(g) 300
(h)200
(i) 700
(j) 100
Topic: Addition
1.Red
(a) 26
(e) 619
2.Green
(a) 50
(e) 949
3.Blue
(a) 21
(e) 908
4.White
(a) 44
5.Black
(a) 40
6.Yellow
(a) 42
Page 106
(b)258 (c)89
(b)724 (c)87
(b)820 (c)93
(d)125
(d)133
(d)128
(b)92 (c)139 (d)989
(b)74 (c)136 (d)834
(b)98 (c)161 (d)872
Topic: Addition
Page 107
(a)12, 22, 10, 25, , 44, 13, 47, 34
(b)25, 71, 46, 47, , 76, 22, 52, 30
(c)56, 127, 71, 138, , 83, 82, 94, 12
(d)39, 48, 9, 136, , 76, 97, 164, 67
(e)135, 267, 132, 257, , 377, 122,
367, 245
(f)122, 289, 167, 256, , 378, 134,
345, 211
(g)245, 632, 387, 456, , 478, 211,
302, 91
Topic: Time 1
1
1.(a) 4 past 2
1
(c) 4 to 4
(e) 25 to 12
1
Page 108
Topic: Division 1
Page 109
1. 2:30 train
2. 6
3.54 minutes
4. 9:30
5.20 minutes
6. 2:30
7.The train terminates
8.(a) 1 hour 25 minutes
(b) Bus
9.11:04
Topic: Lines and Angles
Page 110
1.(a), (c), (e)
2.(a) 5 (b)5
(e) 5
(f) 5
(c)3
Topic: Subtraction
(d)6
1.(a) 6 (b)4 (c)24 (d)48
(e) 19 (f)29 (g)16 (h)14
2.(a) 30, 18
(b) 62, 26
(c) 55, 32
(d) 78, 43
3.(a) 268 (b) 162(c)466 (d)289
(e) 88 (f)48 (g)244 (h)42
(i) 237 (j)134 (k)298 (l)622
Page 112
1.(a) 243(b)514 (c)311
(e) 392 (f)102 (g)89
(i) 403 (j)311 (k)555
2.48, 27, 21
69, 72 26
22, 36, 82
55,122, 67
300, 22, 189
3.(a) 202(b)273 (c)523
Topic: Fractions
1
(d)199
(h)422
(l)133
(d)133
Page 113
3
2
1 2
4
2 3 7
(d) 4 , 8 , 1
1 4 3
(e) 4 , 8 , 4 1 6
(f) 2 , 8 , 1
Topic: Fractions
8
1
5
1
(e) 1 2 (b) 2 past 3
(c) 5 to 4
(d) 4 past 11
1
1
(f) 20 past 4
(h) 5 past 9
1
1 2 1
4
(e) 10 – 0.4
2.(a) –(b)1.6 (c)3.2 (d)5.8
(e) 4.4(f)
–
1
3
(f)3 8 (g)8 (h)
2
3 4 2
1
5 6 3
7
2.8 , 8 ( 4 ), 8 , 8 ( 4 or 2 ), 8 , 7 ( 4 ), 8
3.(a) 2(b)3 (c)2
(d)6
(e) 8
(f)2 (g)8
(h)4
(i) 4
Topic: Graphs
1.(a) 270
(c) 70
Page 115
(b)200
(d)560
Planet Maths Teacher Resources • 3rd Class
7
9
(g)3 10 (h)2 10
4
(i) 4 10 (j)6 10
3.0.1, 0.2, 0.3, 0.5, 0.6, 0.7, 0.9
3.1, 3.2, 3.3, 3.4, 3.6, 3.8, 3.9
6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9
Page 120
1.€2.75, €4.57, €2.74, €5.45
2.Ice-cream – 50, 20, 10, 5
Water – 1, 50, 20, 20, 2, 2
Pencil – 20, 20, 5, 2, 2,
Newspaper – 1, 50, 10, 2, 1
Biscuits – 2, 1, 50, 20, 5, 2, 1
Page 121
Topic: Problem Solving Page 122
Page 114
7
7
1
9
(c) 10 – 0.1(d)
10 – 0.9
1 4
(c) 4 , 8 , 8 7
3
1.(a) 10 – 0.3(b)
10 – 0.7
1.(a) €1.25
(b) Duck and Truck
(c) –
(d)€11.01
(e) €1, 20c, 20c, 5c, 2c, 2c
(f) 13th July
(b) 4 , 4 , 8
1 5 6
Topic: Tenths and Decimals
Page 119
Topic: Money
7
2 3 7
2.(a) 30 (b) 10 (c)10 (d)5
(e) 5(f)15 (g)10c h)€9
1
(e) 8
2.(a) 8 , 8 , 8 Page 118
Topic: Money
1.(a) 2 (b) 4 (c)
4 or 2
(d) 2 , 4 or 8 (f) 1
1.3
2.4
3.3
4.7
5.7
2.(a) 1, 10, 7, 4, 9, 3, 6, 5
(b) 6, 9, 7, 10, 1, 5, 2, 3
(c) 3, 7, 1, 5, 8, 4, 2, 9
3.(a) ––– (iv)
(b) ––– (vi)
(c) ––– (v)
(d) ––– (iii)
(e) ––– (ii)
(f) ––– (i)
Page 111
Topic: Subtraction
Page 117
Topic: Division 1
(d) 5 past 11
(f) 10 past 4
2.(a) 25 past 2
182
Topic: Time 1
(e) Yes, by 350 (f) 40s
(g) Mr Scully’s class
(h) 120
1.(a) 8 (b)
8 (c)
8 (d)
2
(h) 5 to 9
1
(b)7:50
(d)4:25
(f)4:05
(h)8:55
(b) 20 past 3
(g) 4 past 7
(e) 4 to 12
(g) 25 past 7
3.(a) 5:20
(c) 3:30
(e) 8:35
(g) 1:45
1
1.5 2 hours
3.95c
5.4
7.vertically
9.€115
2. €4.85
4.€6.20
6.5
8.45 points
10.4:10
Topic: Problem Solving Page 123
Jack in the box
Big bad wolf
Top secret
Trip around the world
Swim under water
Little sister
Tree top
Tuna
Misunderstood
Topic: Length
1.(a) 7cm
(c) 4cm
(e) 12cm
2.(a) 19cm
(c) 17cm
3.(a) 3m 87cm
(c) 6m 85cm
(e) 7m 34cm
(g) 4m 9cm
(i) 3m 52cm
(k) 7m 52cm
(m) 2m 25cm
Page 124
(b)18cm
(d) c is the shortest
(b) 7m 88cm
(d) 8m 20cm
(f) 31cm
(h) 2m 90cm
(j) 4m 2cm
(l) 2m 59cm
Page 125
(b)19cm
(d)12cm
(f)34cm
Page 130
1.Impossible, Unlikely, 50:50, Likely
and Certain
2.(a)Black
(f)Blue
3.impossible, likely, possible, impossible
Topic: Fractions 2
Page 131
1.(a) 6 (b)4 (c)3
(e) 6
(f)12 (g)1
2.2,6,4,8,3,9,4,10
1,5,9,7,2,3,6,4
Page 126
Topic: Multiplication
Page 127
Across
4.Ten times eight = eighty
6.Six times two = twelve
7.Three times five = fifteen
8.Three times ten = thirty
9.Seven times four = twenty eight
11.Four times five = twenty
12.Two times five = ten
13.Seven times two = fourteen
14.eight times eight = sixty-four
Down
1.Six times ten = sixty
2.Two times eight =eighty
3.Seven times ten = seventy
5.Nine times two = eighteen
8.Eight times four = thirty two
10.Five times two
(a) 24
(b)50
(c) 48
(d)17
(e) 60, 34, 26
Topic: Division
Page 128
(c)40
(g)45
(c)4
(c)2
(d)16
(h)32
(d)9
(d)7
1.(a) 10 (b)3 (c)9
(e) 5
(f)7 (g)2
(i) 6
(j)15 (k)15
1.(a) 35 (b)80 (c)48
(e) 18 (f)56 (g)40
(i) 32
(j)15 (k)24
(m) 10 (n)2(o)80
(d)36
(h)20
(l)50
(p)30
(d)8
(h)1
Page 133
1.Clockwise from top left
(a) 2,3,7,7
(b) 9,3,4,8
(c) 6,7,9,8
(d) 6,2,10,3
(e) 7,8,9,1
(f) 3,3,7,5
(g) 4,6,4,9
(h) 9,7,2,1
(i) 6,8,3,6
(j) 5,8,8,8
(k) 7,1,1,6
2.(a) 217
(b)168
(c) 36
(d)45
Topic: Weight
Page 134
1.(a) carrot, feather
(b) car, coal
(c) flour, cereal
(d) chocolate, brick
(e) coat, chair
(f) yogurt, water
2.(a) 550g
(b)150g
(c) 375g
(d)1kg
(e) 625g
3.(a) 5kg 317g
(b) 7kg 420g
(c) 10kg 201g
(d) 3kg 202g
(e) 1kg 593g
(f) 5kg 582g
Topic: Weight
1.(a) 110g
(c) 60g
(e) 400g
(g) 200g
2.14g, 40g
Page 135
(b)120g
(d)250g
(f)300g
(h)1400g
Topic: Area
Page 140
1.(a) 8 (b)9 (c)10
(e) 16 (f) 16
2.(a) 10 (b)11 (c)8
(e) 14
1.(a) 1
(e) 3
(i) 2
2.(a) 7
(d)10
(d)7
1
(f) 10 2
Topic: Area
Page 129
(d)2
(h)2
Page 132
Topic: Multiplication
1.(a) 40 (b)30 (c)24 (d)25
(e) 20 (f)50 (g)15 (h)16
(i) 48 (j)35 (k)36 (l)6
(m) 100 (n) 64 (o) 28 (p) 80
(q) 32 (r)8 (s)0
(t)14
2.6, 12, 18, 24, 30, 36, 42, 48, 54, 60
Topic: Division
Topic: Division
(c)50¬
Topic: Fractions 2
Topic: Multiplication
1.(a) 6(b)40
(e) 16 (f)56
2.(a) 3 (b)5
(e) 5
(f) 7
3.(a) 6 (b)8
(e) 9
(f) 8
(r)70
(b)9
(e)5
Topic: Chance
(b)10cm
(d)3cm
Topic: Length
2.(a) 24cm
(c) 36cm
(e) 12cm
(q) 45
2.(a) 8
(d) 7
(b)4
(f)9
Page 141
(c)8
(g)6
(d)10
(h)20
Page 142
1.(a) 18
(b)14
(c) 16
(d)19
(e) 42 r1
(f) 18 r1
(g) 12 r2
(h) 12 r3
(i) 38
(j) 84
(k) 5
(l)
(m) 6
2.(a) 6,2
(b)3,30c
(c) 2,4
(d)12
(e) 13
(f)13
(g) 12
(h) 29 +30, there will be an odd
number of children
(i) 20
(j)20
Topic: 3D Shapes
1.d, d, b, d
2.(a) T (b)F
(e) T
(f)F
Page 143
(c)F
(g)F
Topic: Capacity
(d)F
(h)F
Page 144
1.(a) Milk- 1¬
(b) Watering can – 5¬
(c) Paint – 3¬
(d) Bottle of water – 250m¬
(e) egg cup – 50m¬
1
(f) Jug of water – 1 2 ¬
(g) Teaspoon – 5m¬
3.(a) 4¬ 464m¬
(b)8¬ 489m¬
(c) 7¬ 521m¬
(d)10¬ 807m¬
(e) 2¬ 220m¬
(f)2¬ 288m¬
(g) 2¬ 150m¬
(h)1¬ 706m¬
Topic: Capacity
Page 145
1.(a) (b) (c) (d)
(e) (f)
(g)
2.(a) 50m¬
(b)120m¬
(c) 250m¬
(d)120m¬
(e) 140m¬
(f) 3¬
Topic: Time 2
1.(a) 10 (b)30
(e) 15 (f)10
2.(a) am (b)am
(e) pm (f) pm
3.(a) 90 (b)75
4.(a) 1hr 10
(c) 1hr 52
5.(a) 25mins
(c) Sports Live
Topic: Time 2
(a)45mins
(c)9:00
(e)11:15
(g)27mins
(i)35mins
(k)2hours
Page 146
(c)15 (d)10
(g)20 (h)35
(c)pm (d)pm
(c)120 (d)146
(b) 1hr 25
(d) 2hr
(b) Kidz zone
(d) 1 hr 20
Page 147
(b)25mins
(d)2hrs
(f)15
(h)3:15
(j)5:05
(b)12 (c)10
Planet Maths Teacher Resources • 3rd Class 183
Planet
PlanetMaths
Maths
3rd4th
Class
Class
Seasonal
Answers
Assessment Answers
Assessment Test 1
Hallowe’en
1.50
3.50
5.2:45
7.28
9.267
2.106
4.584
6.–
8.A
10.41
5
11. 8 12.6
13. 30
14. 2
15. Parallel
17.169
19.3
16. 4
18.–
20.200
1
3
Assessment Test 2
Christmas Part A
Units 1-14
1.1019 2. 56, 135, 147, 267, 314
3.50
4.D
5.220
6.732
7.48
8.8
9.200
10.C
11.8
12.€2.75
13.–
14.€1.75
15.A
16.25
17.B
18.B
19.C
20.109cm
Assessment Test 2
Christmas Part B
1
1.3:15/ 4 past 3
3.4
5.4
7.259
9.–
11. 3 boxes
13.71
15.€, 50c, 20c, 5c
17.A
19.52
184
Assessment Test 3
Easter
Units 1-7
Units 1-14
2. 40
4.€5.12
6.147cm
8.40 minutes
10.A
2 3 1 3 7 10
12. 10, 8, 2, 4, 8, 10
14.8:45
16. 6
18.D
20.–
1.8
3.D
5.2
7.D
Units 15-20
2.8kg 391g
4.Yes
6.6
8.Unlikely
3
9.1 4 kg or 1kg 750g
10.Any 6 sided shape ( Hexagon)
11.D
12.C
13.95
14.30
15. semi-circle
16. €40
17.225
18.2
19.C
20.430g
Assessment Test 4
Summer
Units 1-27
1.70
2. 43,89,156,270,367
3.60
4.5:05
5.379
6.934
7.3
8.–
9.44
10.12
11.72
12. 25 to 6
13.600 14. vertical and horizontal
3
15. 4 km
17.B
19.€44
21.13
23.C
25.6
27. €10.78
29. 3hrs 20mins
31.24
33. 1hr 40mins
35.A
37. C
39. C
16.A
18.10
20.B
22.8m12cm
24.135
26.5
28.C
30. 707g
32.€2.38
34. 10
36.C
38. 14
40. 1m 99cm
Planet Maths Teacher Resources • 3rd Class