Mental Maths
PS2. 4,000
Busy at Maths pg. 117
Q. 1 a) 63 b) 99 c) 7 d) €28
Q 2 d) €32 e) €10 f) €35
Q 3 d) 60 e) 29 f) 90
Q 4 a) 2.64 km b) €131.25 c) €6,604 d) €7.52
- €10
- 35
- 8 faces, 12 edges, 6 vertices
- 6,090,000
- 87,000
- 14.972
- 5
- 21
- An upside down A
- 1/4
- 0.25
- 0.75
- 48
- 54
- 1,000
- 5 1/2
- €30
- 107 cm
- 1/4, 1/2, 3/4, 7/8
- 1,750
PS2. 4,000
Busy at Maths pg. 117
Q. 1 a) 63 b) 99 c) 7 d) €28
Q 2 d) €32 e) €10 f) €35
Q 3 d) 60 e) 29 f) 90
Q 4 a) 2.64 km b) €131.25 c) €6,604 d) €7.52