Grade 3 Maths Vocabulary - Unit 1-Number and Place Value - Number and Place Value

Sep 28, 2026

Uploaded by asda1da

Grade 3 Maths Vocabulary compiles core terms used across number, addition and subtraction, multiplication, division, fractions, decimals, measurement, time, and geometry. Each unit lists key vocabulary in English alongside Japanese explanations, with brief examples such as 4-digit numbers, decimal point and fraction types, numerator/denominator, and shape properties. The vocabulary also covers units of measurement, area and perimeter terms, and time formats including 12/24 hour systems, supporting bilingual reference for learners.

LanguageEnglish

CategoryExam

FormatPDF

Pages9

Reading Time23 min

AccessFree to download

Unit 1-Number and Place Value

Unit 2-Addition and Subtraction

Unit 3-Multiplication

Unit 4-Division

Unit 5-Fraction

Unit 6-Decimals and Fractions

Unit 7-Measurement, Area and Perimeter

Unit 8-Time

Unit 9-Shape and Geometry

Unit 10 Position and Movement

Unit 11 Handing Data

Grade 3 Maths Vocabulary Unit 1-Number and Place Value- | English | Japanese | Examples | | --- | --- | --- | | ten thousand | 一万 | 10,000 | | billion | 十億 | 1,000,000,000 | | trillion | 一兆 | 1,000,000,000,000 | | 4-digit number | 4けたの数 | 7213 | | decimal point | 小数点 | 7213.3 | | decimal fraction | 分母が十、百、千などで表された分数を少数で表すもの 10分の1のdecimal fractionは 0.1 | | | consecutive | 連続している | | | number sequence | 決まりのある順序にならぶ数 | | | term | その一つ一つの数 | | | partition | 分割 | 231=200+30+1 | | odd | 奇数 | 1.3.5.7.9.11.13… | | even | 偶数 | 2.4.6.8.10.12.14… | Unit 2-Addition and Subtraction | English | Japanese | Examples | | --- | --- | --- | | Increase/decrease | ふえる/へる | + / - | | sum | いくつかを足した数 | | | number bonds | 数のかたまりを作るそれぞれの数 | | Unit 3-Multiplication Unit 4-Division Unit 5-Fraction | English | Japanese | Examples | | | --- | --- | --- | --- | | numerator | 分子 | | | | denominator | 分母 | | | | order fractions | 分数を大きさでならべること | | | | proper fractions | 真分数分子が分母より小さい | | | | improper fractions | 仮分数分子が分母より大きい | | | | mixed numbers | 帯分数横に整数がある真分数 | | | Unit 6-Decimals and Fractions | English | Japanese | Examples | | --- | --- | --- | | equivalent fractions | 等しい分数 | | | Decimal point | 小数点 | 下図 | | Decimal place | 小数位 | 下図 | Unit 7-Measurement, Area and Perimeter | English | Japanese | Examples | | --- | --- | --- | | measurement | 長さや重さなどをはかること | | | unit | 単位 | | | standard unit | その国で主に使う単位 | | | metric unit | メートル法 | | | square unit | 面積の単位 | | | millimeter | ミリメートル | ㎜ | | milliliter | ミリリットル | ml | | mass | そのものの重さ | | | measuring cylinder | メスシリンダー | 下図 | | perimeter | まわりのながさ | 下図 | | edge | 立体での辺 | | | area | 面積 | | | square centimeter | 平方センチメートル | ㎠ | メスシリンダー Unit 8-Time | English | Japanese | Examples | | --- | --- | --- | | Fortnight | 2週間 | 2 weeks | | Decade | 10年間 | 10 years | | Century | 世紀 | 100 years | | Millennium | 千年間、千年期 | 1000 years | | Timetable | 時間割 | | | Arrive | 到着 | Get there | | Depart | 出発 | Leave | | Hour | 時 | | | Minute | 分 | | | Second | 秒 | | | Digital time | デジタル時間 | 下図 | | Analogue time | アナログ時間 | 下図 | | 12 hour time | 12時間制午前午後をつける | 午後3時 | | 24 hour time | 24時間制通して使う | 15時 | | Date of Birth | 誕生日 | | | Leap year | うるう年 | | デジタルアナログ Unit 9-Shape and Geometry | English | Japanese | Examples | | --- | --- | --- | | 3D three-dimensional | 立体 | | | cube | 立方体正六面体 | | | cuboid | 直方体ちょくほうたい | | | pyramid | 4角錐しかくすい | | | sphere | 球きゅう | | | hemisphere | 半球はんきゅう | | | cone | 円錐えんすい | | | cylinder | 円柱えんちゅう | | | prism | 角柱かくちゅう | | | tetrahedron | 3角錐さんかくすい | | | triangular prism | 3角柱さんかくちゅう | | | face | 面めん | | | edges | 立体での辺へん | | | vertices（vertex） | 頂点ちょうてん | | | curved surfaces | 曲面きょくめん | | | 2D Shapes English | 2D Shapes Japanese | Examples | | --- | --- | --- | | square | 正方形 | | | rectangle（oblong） | 長方形 | | | pentagon | 5角形 | | | hexagon | 6角形 | | | heptagon | 7角形 | | | octagon | 8角形 | | | Polygon 2D | 多角形 | | | Polyhedron 3D | 多面体 | | | quadrilateral | 四辺形 | | | parallel | 平行(へいこう)な2線 | | | perpendicular | 垂直(すいちょく)に交わる2線 | | | equilateral triangle | 正三角形 | | | isosceles triangle | 2等辺3角形 | | | scalene triangle | 辺の長さが同じでない3角形 | | | horizontal | 水平(方向) | | | vertical | 垂直(方向) | | | reflective symmetry | 対称 | | | rotational symmetry | 回しても対象になる形 | | | lines (Axis) of symmetry | 対称の軸 | | | sides | 辺 | | | protractor | 分度器 | | | angles | 角度 | | | degrees | 度 | | | 2D two-dimensional | 平面 | | | circle | 円 | | | semicircle | 半円 | | | ellipse | だ円 | | Unit 10 Position and Movement | English | Japanese | Examples | | --- | --- | --- | | compass point | 方角 | | | compass | 方位磁石 | | | protractor | 分度器 | | | acute angle | 鋭角 | | | right angle | 直角 | | | obtuse angle | 鈍角 | | | Clockwise | 時計回り | | | Anti-clockwise | 反時計回り | | | coordinates | 座標(ざひょう) | 下図Pの座標は(3. 5) | 分度器方位磁石方位磁針 Unit 11 Handing Data | English | Japanese | Examples | | --- | --- | --- | | Tally | （

FAQs

What key topics are covered in Grade 3 Maths Vocabulary?

It covers number and place value, addition and subtraction, multiplication and division, fractions and decimals, measurement, area and perimeter, time, geometry, position and movement, and basic data handling.

What does the vocabulary include for fractions and decimals?

It provides terms such as numerator and denominator, proper/improper fractions, mixed numbers, equivalent fractions, and decimal point/decimal place, often with short example references.

Which geometry vocabulary categories are listed?

It lists 3D solids (e.g., cube, cylinder, sphere) and 2D shapes (e.g., square, rectangle, pentagon, circle), including symmetry-related terms, angles, and basic shape vocabulary.

Sep 28, 2026

Uploaded by asda1da