Max Maths, Year 2, Learn together, Estimating numbers to 100 (2)

In the Max Maths curriculum for Year 2, students are engaging with the concept of estimation, specifically estimating numbers up to 100. The lesson illustrates estimation through a practical and visual example involving jelly beans. Padma, a character in the lesson, is tasked with estimating the total number of jelly beans laid out in rows. She starts by counting a single row of 10 jelly beans and then proceeds to count the number of rows. Instead of counting each jelly bean individually, Padma uses her knowledge of counting in tens to estimate the total number by adding 10 for each row.

The activity demonstrates to students that estimating is a useful skill for quickly finding an approximate number without needing an exact count. Padma adds ten repeatedly for each row of jelly beans, resulting in an estimated total of 70. The lesson then reveals the actual number of jelly beans to be 67, showing that Padma's estimate was quite close to the real count. This exercise helps children understand that while estimates may not be precise, they can be very close to the actual number and are a handy tool for making quick calculations.