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Use visual fraction models to add and subtract fractions with the same denominators.

Addition and subtraction with regrouping using different strategies to solve.

Letters to the Editor: Subtract the shame from learning math. Add affirmation and hope A student works on problems during a 12th-grade math class at Roybal Learning Center in Los Angeles in 2019.

Bees can solve math problems with addition and subtraction now Absolutely buzzing about mathematics.

Young children can crudely add and subtract numbers before they have learned the rules of arithmetic, a new study finds. Researchers presented five- and six-year-old children with problems such as ...

There are those who believe that children learn math skills by merely observing the world around them, and that they don’t need to practice rote addition, subtraction, multiplication, and div… ...

Color-coded math problems In experiments, the team trained the animals to recognize the colors blue and yellow as symbols for adding or subtracting by a factor of one.

Recap: What Are Roman Numerals? Before we begin figuring out how to add and subtract Roman style, let’s recap how the Roman numeral system that we learned about last time works.

My last column introduced the concepts underlying BCD (binary-coded-decimal) representations. In particular, we considered unsigned versus 10s-complement versions of BCD numbers. In this column we are ...