Find the missing number in a sequence.

[Free Registration/Login may be required to access all resource tools.] This is a video and practice problems demonstrate finding missing numbers using order of operations and working backwards. Operations include addition, subtraction,...

[Free Registration/Login may be required to access all resource tools.] The video describes how to determine the division pattern in a series of number to find missing numbers. The video is followed by practice problems to assess student...

[Free Registration/Login may be required to access all resource tools.] A learning module where students must apply the order of operations to find the missing numbers in equations involving addition, subtraction, and multiplication. A...

[Free Registration/Login may be required to access all resource tools.] In this learning module, students must identify the pattern in a series of numbers and fill in the missing numbers. Includes video demonstrating a sample problem...

[Free Registration/Login may be required to access all resource tools.] For this learning module, students are asked to identify multiplication patterns and to recall their multiplication facts to fill in missing numbers. Includes video...

[Free Registration/Login may be required to access all resource tools.] For this learning module, students are presented with division problems where they must find the smallest or largest digit missing in a number that will make the...

Practice finding the missing value in an addition or subtraction equation involving negative numbers.

Practice finding the missing value in an addition or subtraction equation involving negative numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this lesson, students will learn how to find the missing percent when given the part and the whole.

In this lesson, students will learn how to find the missing part when given the percent and the whole.

In Pete's truck stop there are trucks loaded with numbers. Help him find the missing numbers for his customers!

[Free Registration/Login may be required to access all resource tools.] The video shows how to find a pattern in a series of subtraction problems to determine the missing problem in the set. The video is followed by additional problems...

Solve for the value of the smiles and frowns to find out how much a smile is worth, in this activity. A challenge that focuses on number sense, number combinations, and unknowns. Included are examples of how this skill is applied in real...

Students enter the missing number in a consecutive sequence of three integers. Score is kept.

Find the missing numbers in the fact family number sentences.

[Free Registration/Login may be required to access all resource tools.] The video shows how to finding the missing number in a two-digit subtraction problem by working backwards. The video is followed by a series of practice questions to...

What happens when there is not enough information to solve a problem? Find out at this test prep site, how missing information or "open sentences" can change the value or truth of a math equation. Practice understanding and applying this...

Explains what ratio tables are. Includes simple examples and a few practice problems.

[Free Registration/Login may be required to access all resource tools.] Learn what ratios are and how to arrive at equivalent ratios. Identify and write equivalent ratios.

Developed by a mathematics teacher from the UK, this page identifies and illustrates several common number patterns.