*We want to know how many pieces of candy I started out with.*Like we said, to work backwards to solve, we start at the end of the problem and undo it one step at a time.We start at the end of the problem and work through to the beginning.

There are a number of ways to go about this problem, but we're going to talk about one solving process in particular, and that is working backwards.

To solve a problem by working backwards, we basically want to undo the problem step-by-step.

Each time Dan handed out candy, he could undo that by taking the candy back, so the problem can easily be undone step by step.

Working backwards is a solving process that can be used on word problems by starting at the end of the problem and undoing the problem one step at a time.

To undo this, we add 5 pieces to the 4 Dan has left, and 4 5 = 9, so now Dan has 9 pieces of candy. To do this, we add those 7 pieces to my Dan's 9 pieces, and 7 9 = 16, so Dan has 16 pieces of candy.

Before this, Dan gave Susan 8 pieces of candy, but she gave him 3 pieces back, making this one is a little trickier to undo.

This tells us that Dan had 21 pieces of candy to start with. As we said, there are multiple ways to go about solving word problems, so it is useful to know when the process of working backwards is the best solving option.

There are certain characteristics of word problems that indicate working backwards should be used to solve the problem.

Since 8 - 3 = 5, this means Dan gave Susan 5 pieces of candy in all.

Thus, to undo this step, we add 5 pieces of candy to Dan's running total, giving him 16 5 = 21.

## Comments Working Backwards Problem Solving Examples

## Problem solving working backwards example

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## Problem Solving Strategy Work Backward

Problem Solving Strategy Work Backward. Work backward to solve each problem. 1. Sarah got on the school bus. At the stop after Sarah's, 7 students got on.…

## Math Problem Solving Strategies solutions, examples, videos

Problem Solving Strategies - Examples and Worked Solutions of Math Problem Solving Strategies, Verbal Model or Logical Reasoning, Algebraic Model, Block Model or Singapore Math, Guess and Check Model and Find a Pattern Model, examples with step by step solutions…

## Working backwards in problem solving - jelsumcornjum.nl

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## Working Backwards at KS2 nrich.

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## Problem Solving by Working Backwards - Math Geek Mama

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## Working Backwards Practicle

The Working Backwards Method is a Singapore Math problem-solving strategy that’s introduced in P3 Math classes. It is usually used to solve Math questions that involve a series of related events.…