P4 WA3 (2025) - Please type in your queries (if any) under the relevant Question Number. Thank you. by

no equation (b)

eng_pei_sze_fronia — 2025-08-28 06:06:37 UTC

no eqn for b) but showed workings in pie chart

eng_pei_sze_fronia — 2025-08-28 06:08:46 UTC

eng_pei_sze_fronia — 2025-08-28 06:13:43 UTC

Minus 1/2 correct?

if only one ans is correct (e.g. smallest), is it A0.5?

mrleung — 2025-08-28 07:07:36 UTC

mrleung — 2025-08-28 07:13:09 UTC

Pls note:

0900 - 1000 (A1)

9 to 10 (A1 -0.5 = 0.5)

9 am - 10 am (A1)

9:00 am to 10:00 am (A1)

9.00 am to 10.00 am (A1)

what about:

1. 0900 am to 1000 am (mix of 24h and 12h presentation?)

2. 9:00 to 10:00 (no am)

900 to 1000

2025-08-28 07:20:44 UTC

minus 1/2?

11b

2025-08-28 08:01:10 UTC

Wrote 6.20 instead of 16.20 but method is correct, positive evidence in model also

can b) i) and ii) be marked independently?

eng_pei_sze_fronia — 2025-08-28 08:03:40 UTC

Shop A (correct)

Difference is wrong

11

2025-08-28 08:11:09 UTC

Should be 0m for whole question since first number transferred wrong but just want to confirm

13

2025-08-28 08:20:36 UTC

Student treated the quarter as 1 whole (10/10)

Poll

phppsmath — 2025-08-28 08:29:33 UTC

This is the solution

2025-08-28 08:30:04 UTC

A managed to get, but extra step

Suggestion:

phppsmath — 2025-08-28 08:32:34 UTC

Poll

phppsmath — 2025-08-28 08:34:23 UTC

2025-08-28 08:42:12 UTC

If Ans is

B , 2.45

A0?

Q9 a

goh_ai_lian_a — 2025-08-28 21:56:55 UTC

What about 09.00 to 10.00? ? and 9.00 to 10.00? ?

Reg 4

foo_chwan_soon — 2025-08-29 00:08:28 UTC

How to award marks? Child made calculation error, only manage to change for Ans blank in part (a), but part (b) is wrong.

Total? M1A1 for part a? 0 for part b?

Reg 24

foo_chwan_soon — 2025-08-29 00:24:18 UTC

Child working shows 7/40, final word statement write 7/40 but ans blank wrote 7/20

Q13a) if child indicated ans with "x" instead of tick...how to allocate marks?

phppsmath — 2025-08-29 00:56:03 UTC

Part b indicated correct calculation for walking..20

2025-08-29 01:00:27 UTC

Can give M1 or A2?

Q13b

phppsmath — 2025-08-29 01:10:08 UTC

Do u deduct 0.5 for wrong MS for Q13b?

2025-08-29 01:25:06 UTC

If no working at all, only write answer 7/40

Can give A2?

Q12(a)

foo_chwan_soon — 2025-08-29 03:09:47 UTC

(a) $10.8

Flow through? reg 12

foo_chwan_soon — 2025-08-29 03:23:28 UTC

(a) wrong due to calculation error, any M1 for part (b) follow through?

Summary for Q9:

foo_chwan_soon — 2025-08-30 02:19:43 UTC

Alternative answers:

9am to 10am [A1]

9:00am to 10:00am [A1]

9.00am to 10.00am [A1]

Partial mark:

9 to 10 [A0.5]

0900am to 1000am [A0.5]

9:00 to 10:00 [A0.5]

900 to 1000 [A0.5]

09.00 to 10.00 [A0.5]

9.00 to 10.00 [A0.5]

(If child correctly identifies the one-hour interval but has incorrect notation, penalise 0.5 marks)

Summary for Q11:

foo_chwan_soon — 2025-08-30 02:23:17 UTC

Q11(a)

No method mark given for the additional incorrect step.

4u = 38 - 16.20 = 21.80

u = 21.80/4 = 5.45

5.45 + 38 = 43.45

Ans(a) 43.45

Do not award M1 as child has an additional incorrect step.

Summary for Q12:

foo_chwan_soon — 2025-08-30 02:26:20 UTC

#1 Alternative answer

12(a) $10.8 [A1]

#2 Revised allocation of method marks:

12(b)

5 x 2.65 = 13.25 [M0.5]

13.25 - 10.80 = 2.45 [M0.5]

Ans: Shop A AND $2.245 [A1]

#3 Follow through for part(b)

If the child's method is correct for both (a) and (b) but the only error is due to a calculation error in part (a), award M1 for follow through.

Summary for Q13

foo_chwan_soon — 2025-08-30 02:29:49 UTC

#1 No negative evidence

No working, only correct final answer 7/40, award A2.

#2 Read Pie Chart

Look out for '7' indicated in the Pie Chart as positive evidence or Method mark.

#3 7 out of 10

Look out for 7/10 and clear indication that '7' refers to adults taking MRT, award [M1].

#4 Incorrect mathematical statement

Look out for incorrect mathematical statement, especially a "fraction = whole number". Penalise half mark.

E.g. 1/4 = 10

10 - 3 = 7 = 7/40 or

Summary for Q8

foo_chwan_soon — 2025-08-30 02:30:57 UTC

Revised allocation of answer mark

Smallest: 10.106 [A0.5]

Greatest: 11.106 [A0.5]