DK Publishing
Subtracting Big Numbers, part 2
Get some subtraction practice with a multi-faceted math instructional activity. After reviewing two sample subtraction problems at the top of the page, third graders solve for the differences of vertical problems, horizontal problems,...
University of Texas
Complex Numbers
Are complex numbers and binomials similar? This stack of slides provides an introduction to complex numbers and shows how to operate with them. The worked examples show a connection between operating with binomials and operating with...
Curated OER
Missing Numbers - Division Worksheet
In this missing numbers worksheet, students find the missing dividend of given division problems. This twelve-page worksheet contains approximately 144 problems.
Curated OER
The Case of the Missing Numbers
In this finding the unknown numbers worksheet, students help Detective Digit solve addition and subtraction problems, match the answers with letters, and find the name of the number thief. Students solve and match 16 problems.
Curated OER
Addition: Missing Numbers 2
In this addition practice worksheet, students use the counting blocks to help them solve 12 math problems. It requires that they find the missing number to complete each of the addition sentences.
Curated OER
Missing Addends
For this missing addends worksheet, students solve 6 word problems where they are given 1 addend and the sum and must find the missing addend in order to solve each problem.
Curated OER
Missing Numbers: 4-Digits
In this missing numbers instructional activity, students fill in missing digits in 4-digit subtraction problems. A reference web site for additional resources is given.
Curated OER
Missing Numbers - Multiplication Virtual Worksheet
For this multiplication worksheet, students complete 72 vertical problems in which they find the second factor using the product and one factor. They can complete the worksheets online or print them out.
Curated OER
Unknown Numbers in Sums and Differences
Beginners to addition and subtraction will have fun with these three word problems, which have accompanying visuals. They complete one problem with a missing difference, one with a missing sum, and a third with a missing subtrahend....
Curated OER
Adding Two Numbers
Keep addition drills interesting by varying the exercises. There are four separate sections here for youngsters to solidify their understanding of adding three-digit addends. First, they calculate eight vertically aligned equations,...
Curated OER
Missing Number Activity
In this missing number worksheet, students fill in blanks in rows with the correct missing numbers. A website reference is given.
Curated OER
Follow the Decade Rules
In this number sense worksheet, students find the missing numbers. Students are to find the missing number or numbers using the rule supplied, or find the rule for the numbers supplied to complete each of the eight charts.
Curated OER
It All Adds Up---Puzzle #6
In this addition crossword puzzle learning exercise, students fill in eight missing numbers so every column and row add up to the number at the end of each column and row.
Curated OER
Unit Fractions of Numbers 5
In this finding the unit fractions of numbers instructional activity, students divide to find fractions of whole numbers, find the missing numbers, use calculators to solve, and solve a word problem. Students solve 45 problems.
Curated OER
Missing Numbers Multiplication (A)
In this math worksheet, students find the missing factors in 40 multiplication problems. Students write the missing number in the box. These problems go from 1x1 to 12x12.
Curated OER
Shh! Numbers
In this symbols of numbers worksheet, 2nd graders write 20 two-digit numbers with Shh! digits, use Shh! digits to find 15 missing numbers and write 8 Shh! numbers on the lines provided.
Curated OER
Christmas Missing Digits I
In this mathematical computation holiday instructional activity, learners find the missing numbers in addition, subtraction, and multiplication problems. There are 23 mathematical problems to complete.
Curated OER
Finding 10s
For beginners to addition, sets of objects are the ideal way to make this concept understandable. For each of these sets they ring 10 and count the remaining. Then, scholars fill in the addends as 10 and the remaining number. The sums...
Curated OER
Fill in the Missing Numbers
In this missing numbers chart worksheet, students cut out seventeen numbers and glue them in their correct places on a graph of numbers from one to one hundred.
EdHelper
Addition: Missing Numbers
For this addition worksheet, students look at pictures of blocks and their numerical values, then find the missing addend. Worksheet is labeled "sample" and is part of a subscription site with links.
Curated OER
Numbers in Sequence
In this online patterns worksheet, students complete a variety of on line exercises including distinguishing between even and odd numbers, finding the missing numbers in sequences and solving eight number equations. Students check their...
Curated OER
Math Lesson Plan : Finger Counting
Create a class of mathematics master. They practice addition to ten until they have mastered the skill. They use their hands to add numbers and eventually find the missing addend to make a sum of 10. They also subtract a single digit...
Curated OER
Number Patterns and Sequences
In this finding the missing numbers in patterns and sequences worksheet, upper graders read a series of one-digit, two-digit, and three-digit numbers to solve the problems. They solve 10 problems.
Curated OER
Square Deal
For this division and multiplication worksheet, 3rd graders fill in the missing numbers in 6 math puzzles. Students use either division or multiplication to find the missing numbers.