共同核心州立标准（美国）
Grade 7
Grade 7共有 10 项标准，每项都有对应的免费练习单。 12–13 岁
说明是我们用自己的话写的简短概述，并非官方原文。
Ratios & Proportional Relationships
7.RP.A.2
Recognise and represent proportional relationships between quantities.
现成的练习单
7.RP.A.3
Solve multi-step ratio and percent problems such as simple interest, tax, markups, discounts and percent increase or decrease.
现成的练习单
The Number System
7.NS.A.1
Add and subtract rational numbers, including negative numbers, and show this on a number line.
现成的练习单
7.NS.A.2
Multiply and divide rational numbers, including negative numbers.
7.NS.A.2.D
Convert a rational number to a decimal using long division; know such decimals end or repeat.
7.NS.A.3
Solve real-world and mathematical problems with the four operations on rational numbers.
Expressions & Equations
7.EE.B.4.A
Solve word problems leading to equations of the form px + q = r and p(x + q) = r.
Geometry
7.G.B.4
Know and use the formulas for the area and circumference of a circle.
7.G.B.5
Use facts about supplementary, complementary, vertical and adjacent angles to find unknown angles.
现成的练习单
7.G.B.6
Solve problems about area, volume and surface area of 2D and 3D objects made of triangles, quadrilaterals, polygons, cubes and right prisms.