besty
Asked 5 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Help

Replies 1
Clifton

7*35=245 11*47=517 517-245=272 272/4=68

5 years ago

shavonne
Asked 5 years ago

SG chevron_right Primary 6 chevron_right Fractions

help

Replies 1
Clifton

28-10+6=24 24/4=6 6*5=30

5 years ago

Vicky Tan
Asked 5 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Charlie scored an average of 75 marks for his frist 2 tests.If he wants to have an average of 78 marks by the third test,how many marks must he score in the third test ?

Replies 12
Clifton

75*2=150 78*3=234 234-150=84

5 years ago
Vicky Tan

Sorry don't understand care to explain

5 years ago
Clifton

Key concept: Total = Average * Number of items

5 years ago
Vicky Tan

I need helppp

5 years ago
Clifton

Total score for first 2 tests = 75*2 = 150

5 years ago
Clifton

Total score for all 3 tests = 78*3 = 234

5 years ago
Clifton

Score for 3rd test = 234-150 = 84

5 years ago
Clifton

Key concept: Total = Average * Number of items

5 years ago
Vicky Tan

Do u have any working

5 years ago
Vicky Tan

Because I need help

5 years ago
Vicky Tan

I need helppp

5 years ago
Clifton

Total score for first 2 tests = 75*2 = 150

5 years ago
Clifton

Total score for all 3 tests = 78*3 = 234

5 years ago
Clifton

Score for 3rd test = 234-150 = 84

5 years ago
Mathematics

Total on 1st 2 tests= 75 × 2 =150 Total on 1st 3 tests = 78 × 3 = 234 3rd test score = 234-150= 84 Hope u understand

5 years ago
Vicky Tan

Who r u

5 years ago
Vicky Tan

But i do understand thank u

5 years ago
Vicky Tan

Who r u

5 years ago
Vicky Tan

But i do understand thank u

5 years ago

iMath
Asked 5 years ago

SG chevron_right Primary 5 chevron_right Geometry

Please help. Thanks

Replies 1
Clifton

(1/2)*8cm*10cm=40cm^2

5 years ago

SD_Su
Asked 5 years ago

SG chevron_right Primary 6 chevron_right Number and Algebra

Answer sheet says Option (3), may I check if it's possible the answer sheet is wrong.

Replies 1
Jason Yek

Nope. He took 40 minutes to walk from his house to the library and back again, which means he walked the distance of from house to library x2. Thus, you will need to divide the distance by 2. Therefore answer is 600m and the answer sheet is correct!

5 years ago

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