This is a technique used for questions where you have to find out how many things does one person has compared to others.

Simple Question:

When you get to harder questions, this is useful.

12 is one whole therefore counting as one 'box'.

12x3 is 3 boxes

12x3-18 is 3 boxes minus 18.

Easy and neat way to answer these questions.

Simple Question:

*Sally had 12 ducks. Bill has x3 more ducks than Sally. Jerome has 18 ducks less than Bill.*

*S {12}**B {36} 12x3**J {18} 12x3-18**This is a really simple question - you do not need to use this technique for this.*

When you get to harder questions, this is useful.

12 is one whole therefore counting as one 'box'.

12x3 is 3 boxes

12x3-18 is 3 boxes minus 18.

Easy and neat way to answer these questions.

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