P4/P5 Math: Before and After with Starting Total and Ending Equal

Questions like these require students to be able to use model drawing to visualize how the ending became both the same amount.

The total at first is given. Both parties undergo a change [ increase and decrease respectively.

And both parties have the same at the end.

Such questions will appear in Section C of P4 and Paper 1 of P5.

Calculator usage is not allowed.

There are a total of 140 red and green bottles at first.

After 12 red bottles are discarded and 20 green bottles were added,

there are now equal number of red and green bottles.

How many green bottles were there at first?

Green bottles due for recycling

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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