More problem solving with bar models, part 1
The first word problem we solve has to do with a board being cut into two parts and one part being four times as long as the other. A bar model (Singapore Math style) EASILY solves this problem!
The second one is more challenging. You buy two kinds of animal feed (mammoth food in this case), a 5-kg bag that costs $15 and a 2-kg bag that costs $7.40. You then sell 1 kg of each kind of food to your neighbor... what should your neighbor pay?
Again, a bar model is a perfect visual illustration to help students see how to solve the problem!
This lesson is intended for 5th grade math and on up (6th grade also).
See also
Problem solving with bar models: fractional part of a whole
Using bar models: a word problem where total and difference are given
More problem solving with bar models, part 2
Math Mammoth Grade 5 curriculum