Make math much simpler with mental math methods. The 16th installment in a series of 21 looks at ways scholars can apply mental math to convert division problems into easier problems with the same quotient. Multiplying or dividing both...

In this math worksheet, students learn a mental math strategy in addition called compensation. When adding a number such as 29, students learn to add 30, then take 1 away. Students solve 25 problems in which they round to the nearest...

Analyze algorithms for computing with rational numbers and develop fluency in their use with your math class. They work individually to solve the problems on the "Alternative Algorithms" sheet. Then, they analyze the appropriateness of...

Third graders use mental-math strategies to solve two-digit plus two-digit addition problems. They observe and discuss online demonstrations, solve word problems as a class, and independently solve problems and describe their solutions...

Second graders investigate the addition of whole numbers. They mentally perform calculations involving addition and subtraction. They make sensible estimates and check the reasonableness of answers.

Students use rounding and compensating with whole numbers and explain how to use the empty number line to show additions and subtractions. They round and compensate in relation to decimal subtraction Background

Fourth graders practice a wide range of strategies for solving addition and subtraction problems containing decimal fractions. They add and subtract fractions, decimals and integers while generalizing the properties of operations with...

Eighth graders discuss how data is collected and participate in data collection through a survey. They complete a scavenger hunt on the Internet to gain understanding of the data measures mean, median, mode, and range.

Students use several examples to create a method for adding and subtracting fractions with unlike denominators. They present these methods to the class and then practice applying methods to sample problems.

Eighth graders investigate the Pythagorean Theorem and practice applying the theorem to various triangles. Finally, in the next instructional activity in the sequence, 8th graders create a song or a story to help them remember the...