Page 57 - SK Year 5 Mathematics DLP

4 Miss Ai Wen, we had 2 900 of Calculate the number of packets
face masks in stocks and 2 015 of face masks.
have been sold. (2 900 – 2 015) ÷ 5 =

Step 1 Step 2

9 1 7 7
8 1010 5 8 8 5
2 9 0 0 − 5
3 8
− 2 0 1 5 − 3 5
8 8 5
3 5
− 3 5
0

For offer packs, please
pack the remaining face (2 900 – 2 015) ÷ 5 = 177
masks into packets of The number of packets of
5 pieces each.
face masks is 177 packets.

5 (4 594 – 178) ÷ (47 – 23) =
1 8 4
(4 594 – 178) ÷ (47 – 23) 24 4 4 1 6
−2 4
= 4 416 ÷ 24
2 0 1
= 184 − 1 9 2 Solve the operations
9 6 in the brackets first.
(4 594 – 178) ÷ (47 – 23) = 184 − 9 6
0

8 400 ÷ (100 − 75) =
Choose the answer below.
A 9 B 12 C 336 D 560

Solve these.
a 35 – 12 ÷ 3 = b 478 – 104 ÷ 13 = c 605 ÷ 5 – 57 =
d 1 008 ÷ 9 – 36 = e (620 – 96) ÷ 4 = f 5 040 ÷ (100 – 85) =

g (7 120 – 2 400) ÷ 8 = h (950 – 490) ÷ (48 – 28) =
i (69 752 – 8 323) ÷ (100 – 53) =

49
• Conduct an error analysis on the calculation process done by pupils.
1.7.1 (iv)
Carry out follow-up action to address pupils’ weaknesses.