Vocabulary Quiz - Addition and Subtraction

A vocabulary quiz tailored for Year 4 students focuses on the concepts of addition and subtraction. The quiz begins by asking which operation would be used to perform the calculation of 543 plus 234, with the correct answer being Addition. It then explores the concept of decomposition, a technique applicable in the operation of Subtraction. The quiz continues by defining an inverse operation as one that undoes another operation, highlighting the fundamental relationship between mathematical processes.

Further questions delve into identifying the appropriate operations for various scenarios. For instance, to find the difference between two numbers, Subtraction is the correct operation. When calculating 789 minus 432, again, Subtraction is used. The quiz also clarifies when an exchange is necessary in subtraction—specifically when the number being subtracted is larger than the number it is being subtracted from in column subtraction. In column addition, the order of writing numbers is not important, while in column subtraction, one should begin with the ones column. Exchanges in column addition occur when the total of a column exceeds its place value. Lastly, when performing column subtraction, the largest number should be written first.