Divide whole numbers and those involving decimals by 100
Maths Resource Description
The ArithmeKit 4.22 from Buzzard Publishing's CanDoMaths series provides a comprehensive exercise on dividing whole numbers and decimals by 100. Students are encouraged to divide a list of numbers by 100 and then match them to the correct answers. This exercise is designed to help them notice patterns and understand the process of division by 100. For instance, dividing 4304 by 100 gives a result of 43.04, and 3304 divided by 100 equals 4.34. The activity also includes a series of calculations such as 7400 ÷ 100, which equals 74, and 740 ÷ 100, resulting in 7.4. The aim is to reinforce the concept that dividing by 100 makes the number 100 times smaller, a principle highlighted by the character Colin, who suggests simply crossing off two zeros to find the answer.
Another part of the exercise involves filling in missing digits to complete division statements, using each digit from 0 to 9 at least once to make the statements true. For example, filling in the blanks to show that 7000 ÷ 100 equals 70, or that 700 ÷ 100 equals 7. This challenges students to apply their understanding of division by 100 in a problem-solving context. The kit also addresses common misconceptions, such as Coco's belief that dividing by 100 is achieved by dividing by 10 twice. Through practical resources and examples, students learn the correct method of division by 100 and practice with a variety of numbers, including those with decimals, such as 56.7 ÷ 100 resulting in 0.567, and whole numbers like 8900 ÷ 100, which equals 89.