Regrouping is the borrowing of a value from one column of numbers to another to aid a mathematical operation. If one is subtracting, it’s necessary to regroup when the number at the top of a column is smaller than the one below it.
Know MoreWhen subtracting numbers with more than one digit, write down the larger number first, followed by the smaller number directly below it. For instance, write 15 below when subtracting it from 32. Since 2 is smaller than 5, by regrouping, two becomes 12 when a 10 is borrowed from three on the column to the left. Likewise, 3 loses 1 to become 2. Subtracting 5 from 12 above it on the right column and 1 from 2 on the left column gives 17 as the answer to 32 - 15.
Learn more about ArithmeticIn math, inverse is explained as the opposite in effect. An inverse function is one that reverses another function. If an inverse does exist for a function, it is referred to as an invertible function.
Full Answer >"Digits" are the symbols or characters used to represent a number visually. A number like five contains one digit, whereas a number like 555 contains three digits. This is easily seen when they are written as numerals: 5 versus 555.
Full Answer >DreamBox Math is an online adaptive learning program designed for children at the kindergarten through 8th grade levels that assesses each student's progress and adjusts the lesson plan accordingly. The interactive online platform, which was created by DreamBox Learning, a Washington State company, can analyze more than 48,000 discrete information points each hour, and use the results obtained to provide the student with the best possible lesson at the correct time, as stated on the company's website.
Full Answer >In mathematics, the word "evaluate" is a verb that refers to finding or calculating the value of something. This can pertain to financial mathematics or to finding the exact value of an algebraic expression or numerical calculation.
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