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Sometimes, we just want fewer y's...or more x's. That's why it's great to know how to add and subtract variables. In real life, though, we try to a...

What's easy, simple, and comfortable? Adding and subtracting double digit numbers. What's not-so-easy, the opposite of simple, and definitely not c...

What better way to teach simple addition and subtraction than with dress-up? Math skills will go great with that pink frilly number hanging in your...

Don’t you hate it when you have too many rational expressions—or too few? Thank goodness for addition and subtraction. We don’t know what weâ...

Solving two-step equations can be tricky, but at least they’re easier than doing the Texas Two-Step. We trip over our feet so often you’d think...

Hemingway was great with words, but not so great with numbers. Thankfully, he had his cats to help teach him math. Stick with us instead; we don't...

SAT Math 3.6 Numbers and Operations