Latihan
Latihan tambahan
5 soalan untuk mengukuhkan unit Pecahan daripada Suatu Kuantiti. Jika salah, baca petunjuk dan cuba lagi.
59 daripada 54 = ?
几分之几 = pecahan daripada
先看分母:把这个数平均分成九份,求出一份;再看分子:要取五份,就用一份乘五。可以先约简再乘,数字会比较小。
例子:4/9 daripada 27 → 27 ÷ 9 = 3,3 × 4 = 12。
注意:求出一份以后还没完成,一定要再乘分子。
a fraction of a number = pecahan daripada
Look at the denominator first: share the number into nine equal parts to find one part. Then the numerator says take five parts, so multiply one part by five. Simplifying first keeps the numbers small.
Example: 4/9 of 27: 27 ÷ 9 = 3 and 3 × 4 = 12.
Watch out: finding one part is not the end; multiply by the numerator.
34 daripada 200 murid memakai kasut putih. Berapakah murid itu?
应用题 = masalah
“两百人的四分之三”是求一个数量的几分之几。先求四分之一是多少人(除以四),再求三个四分之一(乘三)。
例子:3/4 daripada 80 → 80 ÷ 4 = 20,20 × 3 = 60 人。
注意:先用分母除,再用分子乘,两步都不能少。
a word problem = masalah
'Three quarters of 200 pupils' asks for a fraction of an amount. Find one quarter first (divide by 4), then three quarters (multiply by 3).
Example: 3/4 of 80: 80 ÷ 4 = 20 and 20 × 3 = 60 pupils.
Watch out: divide by the denominator and then multiply by the numerator; neither step can be left out.
214 daripada 36 = ?
拆开来算 = kira berasingan
带分数有整数部分和分数部分。整数部分:用整数乘这个数;分数部分:用“先除后乘”求;两部分相加。也可以换成假分数,一次算完。
例子:2又1/2 daripada 20 → 2 × 20 = 40,20 ÷ 2 = 10,40 + 10 = 50。
注意:两部分都要算,漏了任何一部分答案都会太小。
split it up = kira berasingan
A mixed number has a whole number part and a fraction part. For the whole part, multiply the amount by the whole number; for the fraction part, divide then multiply; then add the two parts. Or use the improper fraction in one go.
Example: 2 1/2 of 20: 2 × 20 = 40, 20 ÷ 2 = 10, and 40 + 10 = 50.
Watch out: work out both parts; leaving one out makes the answer too small.
Sebuah kedai ada 90 biji telur. 710 daripadanya telur ayam. Berapakah telur ayam?
十分之几 = persepuluh
先把全部鸡蛋平均分成十份,求出十分之一有几个;分子是七,就取七份,用一份乘七。
例子:3/10 daripada 50 → 50 ÷ 10 = 5,5 × 3 = 15。
注意:不要把分子直接乘十;要用题目里的总数来分。
tenths = persepuluh
Share all the eggs into ten equal groups to find one tenth, then the numerator seven says take seven groups, so multiply one group by seven.
Example: 3/10 of 50: 50 ÷ 10 = 5 and 5 × 3 = 15.
Watch out: do not just multiply the numerator by ten; share the total given in the question.
135 daripada 45 = ?
改成假分数 = tukar kepada pecahan tak wajar
把带分数换成假分数(整数乘分母加分子),然后照样先用分母除,再用新的分子乘。也可以拆成“一个整数”加“分数部分”来算,答案相同。
例子:1又2/5 daripada 10 → 7/5 × 10 → 10 ÷ 5 = 2,2 × 7 = 14。
注意:换成假分数后,要乘的是新的分子,不是原来带分数的分子。
use an improper fraction = tukar kepada pecahan tak wajar
Change the mixed number into an improper fraction (whole times denominator plus numerator), then divide by the denominator and multiply by the new numerator. Splitting it into the whole lot plus the fraction part gives the same answer.
Example: 1 2/5 of 10 = 7/5 × 10: 10 ÷ 5 = 2 and 2 × 7 = 14.
Watch out: multiply by the new numerator, not the numerator of the mixed number.
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