第 1 题
1 分Simplify the ratio \( 45 : 75 \) to its simplest form.
Key Stage 3 (KS3) · Mathematics
Ratio Notation and Simplification：练习题
1 道选择题即时批改，另有 5 道文字题附完整解题步骤，全部围绕「Ratio Notation and Simplification」。
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第 2 题
2 分Simplify the ratio \( 1.5 : 2.25 \) to its simplest form using integers.
先自己写一遍答案，再对照解题步骤。
第 3 题
3 分If \( A : B = 2 : 3 \) and \( B : C = 4 : 5 \), find the ratio \( A : B : C \).
先自己写一遍答案，再对照解题步骤。
第 4 题
2 分A student spends 2 hours studying and 1.5 hours playing sports. Find the ratio of the time spent studying to the time spent playing sports in the simplest form.
先自己写一遍答案，再对照解题步骤。
第 5 题
4 分A wooden board is 2.4 meters long. A carpenter cuts it into three pieces in the ratio \(3:4:5\).
(a) Find the length of the shortest piece in centimeters.
(b) Find the length of the longest piece in centimeters.
先自己写一遍答案，再对照解题步骤。
第 6 题
5 分A factory produces 480 toys in 8 hours.
(a) Find the ratio of the number of toys produced to the time taken in simplest form.
(b) At this rate, how many toys can be produced in 15 hours?
(c) How many hours are needed to produce 900 toys?
先自己写一遍答案，再对照解题步骤。
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