Ads
related to: k5 learning multiply by 9 wordEducation.com is great and resourceful - MrsChettyLife
- Worksheet Generator
Use our worksheet generator to make
your own personalized puzzles.
- Lesson Plans
Engage your students with our
detailed lesson plans for K-8.
- Educational Songs
Explore catchy, kid-friendly tunes
to get your kids excited to learn.
- Education.com Blog
See what's new on Education.com,
explore classroom ideas, & more.
- Worksheet Generator
Search results
Results from the WOW.Com Content Network
Elementary arithmetic is a branch of mathematics involving addition, subtraction, multiplication, and division. Due to its low level of abstraction, broad range of application, and position as the foundation of all mathematics, elementary arithmetic is generally the first branch of mathematics taught in schools. [1][2]
Trachtenberg system. The Trachtenberg system is a system of rapid mental calculation. The system consists of a number of readily memorized operations that allow one to perform arithmetic computations very quickly. It was developed by the Ukrainian engineer Jakow Trachtenberg in order to keep his mind occupied while being in a Nazi concentration ...
K-5 (pronounced "kay through five") is an American term for the education period from kindergarten to fifth grade. It receives equal amounts of criticism and support in the educational industry. While many early childhood experts deem it too closely aligned with more developmentally inappropriate "watered-down" early elementary teaching methods ...
Multiplication table. In mathematics, a multiplication table (sometimes, less formally, a times table) is a mathematical table used to define a multiplication operation for an algebraic system. The decimal multiplication table was traditionally taught as an essential part of elementary arithmetic around the world, as it lays the foundation for ...
e. Multiplication (often denoted by the cross symbol ×, by the mid-line dot operator ⋅, by juxtaposition, or, on computers, by an asterisk *) is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division. The result of a multiplication operation is called a product.
Casting out nines is any of three arithmetical procedures: [1] Adding the decimal digits of a positive whole number, while optionally ignoring any 9s or digits which sum to 9 or a multiple of 9. The result of this procedure is a number which is smaller than the original whenever the original has more than one digit, leaves the same remainder as ...
Since 9 = 10 − 1, to multiply a number by nine, multiply it by 10 and then subtract the original number from the result. For example, 9 × 27 = 270 − 27 = 243. This method can be adjusted to multiply by eight instead of nine, by doubling the number being subtracted; 8 × 27 = 270 − (2×27) = 270 − 54 = 216.
In mathematics education, there was a debate on the issue of whether the operation of multiplication should be taught as being a form of repeated addition.Participants in the debate brought up multiple perspectives, including axioms of arithmetic, pedagogy, learning and instructional design, history of mathematics, philosophy of mathematics, and computer-based mathematics.
Ads
related to: k5 learning multiply by 9 wordEducation.com is great and resourceful - MrsChettyLife