Decimals - Making 1 - Worksheet

The "Decimals – Making 1" worksheet is a mathematics resource designed to help students understand and practice adding decimal numbers to make a whole number, specifically the value of 1. The worksheet presents a series of addition sentences with one of the addends missing. Students are tasked with determining the correct decimal value that, when added to the given decimal number, results in a total of 1. For example, they will find the missing number to complete equations such as 0.6 + _____ = 1 and 0.41 + _____ = 1. This exercise is aimed at reinforcing the concept of decimal place value and the idea of making a whole using decimals.

In addition to filling in missing addends, the worksheet encourages the use of hundred square grids as a visual aid. Students can shade the grids to visually represent the decimal numbers and better understand the concept of combining them to make 1. The worksheet progresses to more complex problems where students must find the missing number in addition sentences involving two or three decimal numbers, such as 0.3 + 0.5 + _____ = 1. There are also activities where students match decimal numbers to make 1 and use column addition to verify if the given decimal sums are true or false. Finally, they are challenged to identify the odd one out in a set of decimal additions, further enhancing their understanding of decimal sums and differences.