Count back & use the relationship between addition and subtraction to subtract within 20.

Discover simple and fun subtraction tricks for kids! Learn easy mental math shortcuts to boost confidence and make subtraction enjoyable for young learners.

In kindergarten, some children already have a sense of what math means and how it functions while others lack a basic understanding of numbers.

From classrooms to kitchen tables, debates about math education are never far away. Should teachers drill multiplication ...

Have you ever tried to add or subtract fractions that have different denominators? It’s tricky, right? Join Ms. Susanna Post in this lesson to learn how to solve these types of challenging ...

Michelle Stephan, Didem Akyuz, A Proposed Instructional Theory for Integer Addition and Subtraction, Journal for Research in Mathematics Education, Vol. 43, No. 4 (July 2012), pp. 428-464 ...

Dutch mathematics programs emphasize mental addition and subtraction in the lower grades. For two-digit numbers up to 100, instruction focuses on "counting by tens from any number" (N10), a strategy ...

Honey Bees Can Do Simple Math, After a Little Schooling Researchers trained 14 bees to add and subtract by one, suggesting their tiny brains have found novel ways of doing complicated tasks ...