P5/P6 Math: Sum of Consecutive, Odd or Even Numbers in a Series

Summing up 2 or 3 numbers are taught in since kindergarten and primary 1.

However, in a series of numbers, a method must be used to find the sum of 20 - 50 numbers without manually adding 2 in a working and continuously adding the next one until the end of the series.

This method was taught in some schools though many choose to omit it due to lack of time within the curriculum (aka rainbow method).

A rainbow can be seen from one end to the other in Singapore City

The question below will randomize with different numbers every hour. 

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P5/P6 Math: Consecutive Numbers in a Series

 These type of questions requires students to be able to understand the meaning of "consecutive".

The Cambridge Dictionary described this word as 

Consecutive events, numbers, etc. follow one after another without an interruption:

Such questions will usually appear in Paper 1 of P5 and P6 exams.
Calculator is not allowed.

The sum of 5 consecutive odd numbers is 45.

What is the 2nd number in the series?

Bar Graph showing consecutive increase

If the above question is easy, try to do the more challenging question below.

The question below will randomize with different numbers every hour. 

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Below are 3 different questions to try.

Each of the consecutive series are different.

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P4/P5 Math: Sum of 2 not given

The following question type is an advance version of "Sum of 2 given".

Instead of giving a sum of 2 (out of 3 items) , the sentences are rephrased in another manner.

Such questions usually appears in Paper 1.
Calculator usage is not allowed.

The students of class 5A, each joined one of these 3 different clubs,
namely, a computer club, a nature club and an astronomy club.

15 students are not members of the computer club.
17 students are not members of the nature club.
12 students are not members of the astronomy club.

How many students are there in class 5A?

If the above question is easy, try to do the more challenging question below.

The question below will randomize with different numbers every hour. 

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P4 Math: Sum of 2 given

The question type below uses the sum of 2 to describe the relationship between 3 objects.

Such questions often appear in P4 exam papers in Section C.

A more complex version of this question can also be found here.

Abigail, Beth and Candice were given a sum of money to share. The total of Abigail and Beth's share is $35. The total of Beth and Candice's share is $26. The total of Abigail and Candice's share is $31

How much did the 3 girls have altogether?

If the above question is easy, try to do the more challenging question below.

The question below will randomize with different numbers every hour. 

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P6 Math: 3 Parties but only sum of 2 given

The question below usually appear in many schools' Prelim Papers just before the PSLE.

Such questions will appear in Paper 2.  

Calculator usage is allowed.

This question revisits a similar P4 concept here.

Harry and Randall and Patrick made some paper flowers for a charity event.
The number of paper flowers made by Harry and Randall was 290.
The number of paper flowers made by Randall and Patrick was 728.
Patrick made thrice as many paper flowers as Harry.

How many paper flowers did the 3 boys make altogether?

If the above question is easy, try to do the more challenging question below.

The question below will randomize with different numbers every hour. 

Copy below question down before making attempt.

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