Questions like these require students to be able to draw model to represent the first fraction of total before processing the rest of the numerical values to represent the remainder.
A part whole model will allow students to be able to process the remaining using the given numerical values.
Such questions often appear in Section C of P4 exam papers.
Gianna drank 1/5 of the milk in the carton.
Her father drank 115ml and her brother finished drinking the remaining 81ml.
What is the volume of milk in the carton at first in millilitres?
If the above question is easy, try to do the more challenging question below.
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