Horizontal Missing Divisors

Worksheet Description

This worksheet features 20 two digit divisors that are missing.  Use the quotient and the dividend that is provided to determine these divisors. This worksheet consists of a series of addition problems where the student must find the missing addend. Each problem provides a three-digit number and a sum, and the student must calculate the missing number that, when added to the given number, will result in the provided sum. The structure is straightforward, with a blank space left for the missing addend, and the problems increase slightly in difficulty as the worksheet progresses.

The purpose of this worksheet is to reinforce the concept of addition and the relationship between addends and sums. It encourages students to apply their knowledge of addition facts and to use subtraction as the inverse operation to find the missing number. This skill is foundational for algebraic thinking and helps students develop critical problem-solving abilities. The worksheet aims to build confidence in working with larger numbers and enhances the students’ ability to perform mental calculations or written methods to solve addition problems.