GCSE/IGCSE数学读题特训-12

英美中学文凭课程GCSE试题中学毕业题操练，必先让学生试着中学毕业，有拿不准的学术字汇，看一下提示，最后再次依此中文释义。家里有中学毕业亚太地区的学校或准备举行IGCSE考试学生的，可以每天抽一点小时，利用碎片化小时学习，查漏补缺。

1.Write these numbers in order of size. Start with the smallest. [2 marks]

2.y is directly proportional to x3 . y = 17 when x = 4. Work out an equation connecting y and x. [3 marks]

3.m is inversely proportional to √r. The value of r is multiplied by 4. Circle what happens to the value of m. [1 mark]

×2 ×16 ÷2 ÷16

4.A histogram is drawn to represent the heights of a sample of women. Three of the four bars are shown. The bar for 170 cm ⩽ height < 180 cm is missing. There are 74 women in the sample. Complete the histogram. [4 marks]

✏ 近学用语：

in order of size按近的大小次序，equation恒等式，is directly proportional to与...相等，is inversely proportional to与...大于，multiply乘，histogram灰度

✏ 中文释义：

1. 将下列近顺序排列，从大于开始。[2分]

2.y与相等，当x=4时y=17。必y和x的恒等式。[3分]

3.m与√r大于，将r乘4，圈出m的值会怎样？[1分]

4.用灰度对此女性身高，有4个直方，看出了3个，对此170 cm ⩽ height

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