2013 SA2 Maths Practice Paper Set 1

Hi 5F,

I hope you are making good use of the holidays. As promised, here are the answers to the questions that we did not have time to complete discussing. Before I give you, let me remind you on the things that you have to do before you return on Monday:
1) Type your compos and email me if you haven't done so: reena_shukla_prempal_shukal@moe.edu.sg
2) Complete El Mock Paper
3) Complete Maths Paper 2 Set 2
4) File in ALL your worksheets into your English, Maths, Science files. Bring these worksheets back only: All EL and Maths practice papers for SA2 (2 EL that we have discussed and 1 Maths)

See you soon!
Ms Reena

Here are the answers:

9.	4 + 5 = 9 180 ÷ 9 = 20 5 × 20 = 100 100 × 2 = 200
10.	I will draw with you in class. Length should be about 10.3cm
11.	6 calculators + 2 clocks = $64 × 2 = $128 1 calculator = $128 - $110 = $18 3 calculators = $18 × 3 = $54 1 clock = $64 - $54 = $10
12.	¼ × ¾ = 3/16 (men) 1 - 3/16 - 1/4 = 9/16 (children) 9u à 48 + (48 ×2) = 144 2u à 144 ÷ 9 = 16 16u à 16 × 16 = 256
13.	No. of 50-cent coins Total value of 50-cent coins No. of 20-cent coins Total value of 20-cent coins Is the total value $264? 50 $25 40 $8 NO 200 $100 160 $32 NO 400 $200 320 $64 YES
14.	58 × 6 = 348 57 × 4 = 228 348 – 228 = 120 120 + 2 = 122 122 ÷ 2 = 61
15.	EFC = 180o – 90o – 33o = 57o  GEC = 180o – 60o – 60o = 60o  FEC = 180o – 92o – 57o = 31o  GEF = 180o – 60o – 60o – 31o = 29o
16.	80% × $160 = $128 65% × $160 = $104 $128 + $104 = $232 107% × $232 = $248.24
17.	10 × 10 × 10 = 1000 1000cm3 = 1000ml 1600 – 1000 = 600 6 × 6 × 25 = 900 900cm3 = 900ml 600 / 900 = 2/3
18.	a) 9 + 7 = 16 b) 30 × 30 + 30 × 4 + 4 = 1024 c) 60 × 60 = 3600     60 – 2 = 58