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Millions 百万位

Hundred Thousands 十万位

Ten Thousands 万位

Thousands 千位

Hundreds 百位

Tens 十位

Ones 个位

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How to write a 7digits number in numbers and words  如何用数字和文字来写出一个7位数 

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How to write a 7digits number in numbers and words  如何用数字和文字来写出一个7位数 

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Use comma to separate each 3 digits.

用逗号来间隔每三位数字。

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For comparing numbers. 用于比较数字大小

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If you feel confused about the symbols, here is a tip for you: The wider side of the symbol, the bigger number it is.

符号口朝哪一边，哪一边的数字就较大。

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What is Multiplication and Division 乘除法的基本概念 

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What is Multiplication and Division 乘除法的基本概念 

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factor 乘数；因数

product 积 （乘法的结果）

dividend 被除数

divisor 除数

quotient 商

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To get the square number, you need to time the number ITSELF for TWICE!!!

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To get a cube number, you need to time the number ITSELF for THREE TIMES!

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distributive law of multiplication 乘法分配律

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distributive law of multiplication 乘法分配律

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numerator分子: 从整体当中取了几等份

denominator分母：整体被平均分成了几份

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在分数中，分子和分母不同但表示相同数值的分数。

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Equivalent Fractions can ONLY be made by multiplying and dividing, AND whatever you do to the numerator (top), you need to do the same to the denominator (bottom).

求等价分数， 分子分母必须同时乘以同一个数（通分），或者同时除以同一个数字（化简）。

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Adding fraction with different denominators 分母不同的分数相加

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Adding fraction with different denominators 分母不同的分数相加

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Step 1: Change the denominators into the same one.

Step 2: Find out the equivalent fractions. （Find out the LEAST common factor of the denominators）

Step 3: When you change the denominators into the same, follow the rule of adding fractions with same denominator.

1. 当运算分母不同的分数时，我们需要转化成分母相同分数。

2. 因此，我们需要找到等值分数。(找到分母的最小公因数)

3. 当我们将参加运算的分数转化成分母相同的等值分数，可以根据分母相同的分数的运算规则进行计算。

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Adding fraction with the same numerator 分母相同的分数相加

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Adding fraction with the same numerator 分母相同的分数相加

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When the denominators are same, adding the numerators together. (Don't need to change the denominator!!!)

分母相同，分子相加, 分母不变。

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The rule is same as addition.

与加法的规则相同，只是运算符号不同。

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How to convert an improper fraction into a mix number? 如何将假分数转化成带分数

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How to convert an improper fraction into a mix number? 如何将假分数转化成带分数

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How to convert a mix number into an improper fraction? 如何把带分数转化成假分数

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How to convert a mix number into an improper fraction? 如何把带分数转化成假分数

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Multiply fraction by a whole number 分数和整数的乘法

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Multiply fraction by a whole number 分数和整数的乘法

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Multiplying Fraction with Mixed Numbers 分数和带分数的乘法

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Multiplying Fraction with Mixed Numbers 分数和带分数的乘法