Max Maths, Year 2, Learn together, Rounding numbers (1)

In the Max Maths Year 2 curriculum, children are introduced to the concept of rounding numbers to the nearest ten. The lesson begins with a practical example, asking students to consider a box containing 18 books and to determine what this number rounds to when approximated to the nearest ten. The lesson guides students through the process, explaining that if the units digit is 5 or more, the tens digit is increased by one, which is known as rounding up. Therefore, 18 is rounded up to 20, and this is expressed as 18 ≈ 20.

The lesson continues with another example, this time with a box holding 33 pencils. Students learn that when the units digit is less than 5, the tens digit remains unchanged, and the number is rounded down. Consequently, 33 is closer to 30 than to 40 and is rounded down to 30, written as 33 ≈ 30. The final example provided is the number 75, which is exactly halfway between 70 and 80. In such cases, the rule is to round up, so 75 is rounded to 80, noted as 75 ≈ 80. Through these examples, children learn the basic rules of rounding numbers and how to apply them to round to the nearest ten effectively.