Kellyn Tan
Asked 9 years ago

SG chevron_right Primary 4 chevron_right Number and Algebra

Please help and thank you so much.

Replies 0

Kellyn Tan
Asked 9 years ago

SG chevron_right Primary 4 chevron_right Number and Algebra

Replies 2
Shaoyang Brandon

Hi, Kellyn. If you observe carefully, all the even numbers have a subtraction sign AND all the odd numbers have an addition sign. HINT 1 For the odd numbers, pair up the numbers as seen below. 1 and 99 2 and 98 3 and 97 and so on. HINT 2 Do the same for the even numbers. 2 and 98 3 and 97 4 and 96 and so on. HINT 3 What do you notice about the value of each pair? :) :) Hint 4: How many pairs are there for the even numbers? How many pairs are there for the odd numbers? Bonus Hint: There is one number that cannot be paired. Find that number. If you need more hints, let me know. :)

6 years ago
Raymond Ng

Add a 0 in front. 0+1 = 1 -2 + 3 = 1 ... Total 50 pairs. So, 50 × 1 = 50

6 years ago

Adrian Ng
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Fractions

Making it visual...

Replies 1
Bee Leng

Thank you for helping

6 years ago

Bee Leng
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Number and Algebra

Really don't know how to solve this, Pls help, ️tks

Replies 4
Jessica sica

60% girls without spectacles 40% boys without spectacles 40% boys without spectacles = 24% of total pupils in school Divide 2 on both sides 20% pupils (regardless boys or girls) without spectacles = 12% of total pupils in school Times 3 on both sides 60% girls without spectacles = 36% of total pupils in school pupils without spectacles = boys without spectacles + girls without spectacles = 24% + 36% = 60% pupils with spectacles = 100% - 60% = 40% 40% = 580 Divde 4 on both sides 10% = 145 Total number of pupils = 100% = 145 * 10 = 1450

6 years ago
Bee Leng

Thanks for helping

6 years ago
Pieter Cronje

P ?

6 years ago
Shaoyang Brandon

I find the sentence '3/4 of those who wear spectacles are boys' redundant. You can do without this statement because the statement 'the number of boys who do not wear spectacles forms 24% of the total pupils in the school' helps the learner to solve for the problem immediately.

6 years ago

Bee Leng
Asked 9 years ago

SG chevron_right Primary 5 chevron_right Fractions

Pls help with this p5 Maths,thanks

Replies 2
Shaoyang Brandon

Hi, Bee Leng. See if you understand the solution below. :)

6 years ago
Bee Leng

Yup, thanks so much, can understand😉Shaoyang Brandon

6 years ago

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