Max Maths, Year 3, Learn together, Finding complements to 100

In a Year 3 mathematics lesson from Max Maths, students are introduced to the concept of finding complements to 100. This essential skill helps children understand how to make up the difference to reach a total of 100 using addition. The lesson, titled "Finding complements to 100," is structured as a "Let's Learn Together" activity, which encourages collaborative learning and problem-solving among students.

The activity is broken down into three parts, each presenting a different starting number and guiding the students on how to add to it to make 100. In part (a), students start with the number 35 and learn to first round it up to the nearest ten by adding 5, resulting in 40, and then add 60 more to reach the total of 100. Similarly, part (b) begins with the number 47, which is rounded up to 50 with an addition of 3, followed by adding another 50 to complete the sum to 100. Lastly, part (c) takes the number 53, adds 7 to get to the nearest ten, which is 60, and then adds 40 more to achieve the total. Through these exercises, students practice the concept of rounding to the nearest ten and then finding the complement to 100, reinforcing their understanding of addition and place value.