Save some trees and use virtual worksheets. Here are 6 different virtual worksheets that require learners to determine the missing addend. Each page includes 12 problems to solve.

In this addition worksheet, students look for missing numbers in addition patterns of 6, 7, and 10. Patterns are set up in addition problem form.

In this addition worksheet, students are given one addend and the answer to a total of 25 simple addition problems. Students fill in the missing addend. Worksheet is labeled as a sample from a subscription site.

Mixed numbers are the focus of a five-question interactive. Scholars move fraction pieces into strips and equations to find solutions. Questions challenge participants with multiple-choice, a true or false, and one discussion.

A five-question interactive test scholars' knowledge of adding and subtracting decimals. A tool aids in problem-solving with movable parts that reveal addends and sums. Question types include one discussion, fill and in the blank, and...

In this addition worksheet, students use the number line to help them find the missing numbers to complete the single and double digit addition facts. Students solve 23 problems.

In this addition and subtraction worksheet, students use the number line to help find the missing numbers for the 23 single and double digit problems.

Otters swim through numerical gates carrying multiplication equations with a missing factor. By choosing the gate with the correct missing factor, players make the otter swim faster in the online game.

In this addition worksheet, students look at block and their accompanying numerical values, then fill in missing numbers to complete simple addition problems. Worksheet is labeled as a sample from a subscription site.

In this addition activity, students count the dots on each domino and fill in the missing numbers to complete the addition facts for the 13 problems.

Roomrecess: Alien Addends is an online game where the player's spaceship has to catch the missing numbers to the addition problems.

Funky Mummy is a mobile-friendly number facts game. Play this game to practice quick recall of addition, subtraction and multiplication facts.