Max Maths, Year 3, Learn together, Word problems (length) (1)

In a Year 3 mathematics lesson from Max Maths, students are introduced to word problems involving lengths. The example provided for learning together involves a practical scenario where a roll of ribbon measures 3 metres and 52 centimetres in length. Jade, working on her school project, cuts off 1 metre and 31 centimetres from this roll of ribbon. The students are tasked with determining the length of the ribbon that remains after Jade's cut. The answer is required to be presented in both metres and centimetres to ensure a clear understanding of the two units of measurement.

To solve this problem, a model drawing is suggested to visually represent the lengths of ribbon before and after the cut. This visual aid helps to clarify the subtraction process that needs to be carried out. The first step is to convert both lengths into centimetres, which gives 352 cm for the original length and 131 cm for the length that Jade cut. By subtracting the smaller length from the larger, students find that 221 cm of ribbon is left. To convert this back into metres and centimetres, the students are guided to separate 221 cm into 200 cm (which is 2 metres) and the remaining 21 cm. Thus, the final answer to the problem is that there are 2 metres and 21 centimetres of ribbon remaining.