Large number 多位數
  Ten thousand 一萬
  One hundred thousand 十萬
  One million 一百萬
  Ten million 一千萬
  One hundred million 一億
  Approximation 近似值
  Round off 四捨五入
  Closer to 較接近
  Whole number 整數
 
  Compass 指南針
  The eight compass points 八個方向
  North-east 東北
  South-east 東南
  South-west 西南
  North-west 西北
  Direction board 方向板
 
  Comparing fractions 分數比較
  Using one half as a standard 用二分之一作比較標準
  Expand a fraction 擴分
  Find the common denominator 通分母
  Common multiple 公倍數
  Addition of fractions 分數加法
  Proper fraction 真分數
  Fractions with different denominators 異分母分數
  Add whole number to whole number. Add fraction to fraction. 整數加整數,分數加分數。
  Reduce to its simplest form 約至最簡
  Change the improper fraction to a mixed number 把假分數化為帶分數
  Subtraction of fractions 分數減法
  If the fraction cannot be subtracted, take 1 from the whole number part. 分數部分不夠減,從整數部分退1。
  Subtract a whole number from whole number. Subtract a fraction from a fraction. 整數減整數,分數減分數。
  Mixed operations of fractions 異分母分數加減混合計算
  Estimate the answer first 先估計答案
  Move the addition part forward and then calculate 把加數移前再計算
  Calculate the whole number part and fraction part separately 整數部分和分數部分分開計算
  It is easier to solve problems by first rounding off the fractions to the nearest whole numbers. 把問題中的分數以整數的近似值來代替,會易於解決問題。
  rewrite 改寫
 
  Unknown 未知數
  Algebraic symbol 代數符號
  Represent 代表
  Algebraic expression 代數式
  Addition and subtraction of algebraic expressions 加減的代數式
  Multiplication and division of algebraic expressions 乘除的代數式
  Put the algebraic symbol after the number 把代數符號放到數字後
  Leave out the multiplication sign 省去乘號
  Write the division form as a fraction 把除式寫成分數式
 
  Ancient numerals 古代數字
  Classical Chinese numerals 中國大寫數字
  Modern Chinese numerals 中國小寫數字
  Special Chinese numerals 中國花碼數字
  Hindu-Arabic numerals 阿拉伯數字
  Roman numerals 羅馬數字
  Symbol 符號
  Place value system 位值制
  Metric system 十進制
 
 
  Multiplication of fractions 分數乘法
  Reciprocal 倒數
  A proper fraction multiplied by a whole number 真分數乘以整數
  A proper fraction multiplied by a proper fraction 真分數乘以真分數
  Multiplication of mixed numbers 帶分數乘法
  Making approximations 估計答案的近似值
  Round off the fractions to whole numbers. Then multiply the whole numbers. 把分數取整數的近似值,再把近似值相乘
  Finding the value of a fraction of a number 找出一個數的幾分之幾的值
 
  Parallelogram 平行四邊形
  Trapezium 梯形
  Polygon 多邊形
  Area 面積
  Width 闊度
  Height 高度
  Base
  Correspond 對應
  Corresponding height 對應的高
  Corresponding base 對應的底
  Per square metre (m2) 每平方米
  Dissect the figure 把圖形分割
  Dissect the figure vertically 把圖形垂直分割
  Dissecting method 分割法
  Parallel side 平行邊
  Upper base 上底
  Lower base 下底
  Perpendicular distance 垂直距離
  Make up of triangle A and trapezium B 由三角形A和梯形B組成
  Fit 補上
  Fitting method 補足法
  Missing part 缺去部份
  Dotted line 虛線
  Coloured part 著色部份
  Use one calculation to find the answer 用一道算式解答問題和找出答案
 
  Pictogram 象形圖
  Bar chart 棒形圖
  Stand for 代表
  Title 標題
  Label 項目
  Legend 圖例
  Round off the number to the nearest ten or hundred 把數目湊整為10或100的倍數
  Sort data 資料歸類
 
  Degree
  Right angle 直角
  Acute angle 銳角
  Obtuse angle 鈍角
  Protractor 量角器
  Centre point 中心點
  Base line 底邊
  Tip 頂點
  One end of a line 線的一端
  Extend 延長
  Overlap 重疊
 
 
  Addition of decimals 小數加法
  Subtraction of decimals 小數減法
  Mixed operations of decimals 小數加減混合計算
  Is approximately equal to 約等於 (»)
  Metric system 十進制
  The last 0 after the decimal point can be left out 小數點最後的0可被刪掉
  Add / Put the decimal point and 0 in the same column 在同一欄上加小數點和補上0
  Whole number part 整數部份
  Calculate the parts in the brackets first 先計算括號部份
 
  Multiplication of decimals 小數乘法
  Multiply decimals by whole numbers 小數乘以整數
  Product
  Look at the number of decimal places and decide the position of the decimal point 看是多少位小數而決定答案的小數點位置
  When a decimal is multiplied by 10, we find the product by moving the decimal point 1 place to the right. 若果小數乘以10,只要把小數點向右移一個位便是它們的積。
  Multiply decimals by decimals 小數乘以小數
  Look at the total number of decimal places in the two decimals and decide the position of the decimal point 看被乘數和乘數的合共小數位是多少,而決定答案的小數點位置。
  Reasonable approximation 合理的近似值
 
  Simple equation 簡易方程
  Algebraic expression 代數式
  Algebraic symbol 代數符號
  Unknown 未知數
  The left side of the equal sign has the same value as the right side 等號左右兩邊數值相等
  Solving a simple equation 解方程
  Beam balance 天平
  Add / subtract / multiply / divide both sides of the simple equation by the same number. 要同時在方程式的左右兩邊加 / 減 / 乘 / 除以相同的數字
  After solving a simple equation, we have to substitute the answer into the equation and check if the answer is correct. 解方程後,應把答案代入方程中,看看答案是否正確。
 
  Bar chart 棒形圖
  Bar 棒條
  Horizontal axis 橫軸
  Vertical axis 縱軸
  One-to-fifty representation 一格代表50個單位的表示法
  One-to-hundred representation 一格代表100個單位的表示法
  Compound bar chart 複合棒形圖
  Stacked compound bar chart 接疊式複合棒形圖
  Clustered compound bar chart 並列式複合棒形圖
  Use the computer software, Excel, to make a compound bar chart. 用試算表軟件製作複合棒形圖
 
 
  3-D shape 立體圖形
  Prism 柱體
  Triangular prism 三角柱體
  Rectangular prism 方柱體
  Cube 正方體
  Hexagonal prism 六角柱體
  Pyramid 錐體
  Hexagonal pyramid 六角錐體
  Rectangular pyramid 長方錐體
  Triangular pyramid 三角錐體
  Sphere 球體
  Cylinder 圓柱體
  Cone 圓錐體
  Properties of 3-D shapes 立體圖形的特性
  A cube has 6 faces of the same size 一個正方體有六個相同大小的面
  Pointed top 尖頂
  Base
  Stack
  Curved surface 曲面
  Net 紙樣
  Nets of cuboids 長方體紙樣
  Nets of cubes 正方體紙樣
 
  Volume 體積
  Takes up space 佔空間
  Compare the volumes of objects intuitively 用直觀法比較物件的體積
  Cubic centimetre (cm3) 立方厘米
  Cubic metre (m3) 立方米
  Cuboid 長方體
  Base area 底面積
  Formula 公式
  Volume of a cuboid = Length Í Width Í Height 長方體體積 = 長 Í 闊 Í 高
  Volume of a prism = Base area Í Height 柱體體積 = 底面積 Í 高
  Volume of irregular 3-D shapes 不規則立體圖形的體積
  Divide the 3-D shape 把立體圖形分割 (分割法)
  Fill in the missing part 填補缺少的部份 (填補法)
  Volume of a cube 正立方體體積
 
  Divide fractions by whole numbers 分數除以整數
  Numerator 分子
  Denominator 分母
  Mixed number 帶分數
  Improper fraction 假分數
  Reciprocal 倒數
  Divide whole numbers by fractions 整數除以分數
  Divide fractions by fractions 分數除以分數
  Divisor 除數
  Dividend 被除數
  Mixed operations of multiplication and division on fractions 分數乘除混合計算
 
  Rotational symmetry 旋轉對稱
  Rotational symmetrical shape 旋轉對稱圖形
  Rotate one cycle 旋轉一周
  Overlap 重疊
  Original image 原本的圖像
Back to Main