Câu hỏi: Biểu diễn biểu thức \(K = \sqrt[3]{{\frac{2}{3}\sqrt[3]{{\frac{2}{3}\sqrt {\frac{2}{3}} }}}}\) dưới dạng lũy thừa với số mũ hữu tỉ. A. \(K = {\left( {\frac{2}{3}} \right)^{\frac{5}{{18}}}}\) B. \(K = {\left( {\frac{2}{3}} \right)^{\frac{1}{{2}}}}\) C. \(K = {\left( {\frac{2}{3}} \right)^{\frac{1}{{8}}}}\) D. \(K = {\left( {\frac{2}{3}} … [Read more...]

## Missing Number in Subtraction

The basic concept of finding the missing number in subtraction sums with one-digit number. These give us support and idea about the basic subtraction facts, as well as help us to understand the subtraction's relationship to addition. It also assists as an introduction to learning algebra (as the missing number could be represented by a variable or a letter). While solving the … [Read more...]

## Subtraction word problems – 1-digit numbers

Math basic concept on subtraction word problems - 1-digit numbers for the first grade. To understand the word problems with different digits combinations read the question carefully and follow the steps provided. Suppose, a man had 7 apples, he ate 3 of them. How many apples are still left? Here we know that when 3 things are taken from 7 things there are then 4 things … [Read more...]

## Addition Fact Sums to 13

In math addition fact sums to 13 we need to find the two numbers that add to thirteen. There are many combinations of numbers that add to 13 (thirteen).Suppose Clara’s sister gave her 7 candies how many candies Clara need more to make 13 candies? Clara needs 6 more candies to make 13. Since, 7 + 6 =13. Memorize the table based on addition facts that add to 13: From the … [Read more...]

## Adding Doubles

In math adding doubles plays an important role for the kids to know addition facts. This activity increases the math skills in adding the numbers. Adding a number with the same number makes the addition doubles. Memorize the following table based on adding doubles: Note: Take the print out of this table based on adding doubles and hang on the wall or make small pieces of … [Read more...]