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Unit 42 · Banding Pecahan dan Perpuluhan
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Unit 42

Banding Pecahan dan Perpuluhan

Tukar pecahan persepuluh kepada perpuluhan sebelum membanding nilainya.

Banding Pecahan dan Perpuluhan
Langkah 1

Tukar kepada bentuk sama

Tukar pecahan persepuluh kepada perpuluhan sebelum membanding nilainya.

4/10 = 0.4
Tukar kepada bentuk sama = 化成同一种写法
比较前先把分数和小数写成同一种样子。分母是10的分数,分子就是小数点后的数字:4/10 写成 0.4。两边写法相同,才能直接比大小。例子:9/10 = 0.9,所以 9/10 和 0.9 一样大。注意:只有分母是10才能这样直接改写,别把 4/5 写成 0.4。
Tukar kepada bentuk sama = change to the same form
Before comparing a fraction with a decimal, write both the same way. A fraction with denominator 10 becomes a decimal with that numerator after the point: 4/10 becomes 0.4. Then the two numbers are easy to compare. Example: 9/10 = 0.9, so they show the same amount. Watch out: this quick rule only works for tenths; 4/5 is not 0.4.
Langkah 2

Nilai yang sama

Dua tulisan boleh mewakili nilai yang sama, contohnya 7/10 sama dengan 0.7.

7/10 = 0.7
Nilai yang sama = 相同的值
7/10 和 0.7 写法不同,但表示同一个量:把一个整体平均分成10份,取其中7份。分数用分子分母表示,小数用小数点后的十分位表示。例子:一条巧克力分10格,吃掉6格,就是 6/10,也就是 0.6。注意:0.7 不是 7,也不是 0.07,十分位只在小数点后第一位。
Nilai yang sama = same value
7/10 and 0.7 look different but describe one amount: a whole cut into 10 equal parts with 7 parts taken. The fraction uses a numerator and denominator; the decimal uses the tenths digit. Example: a chocolate bar has 10 squares and you eat 6, which is 6/10 or 0.6. Watch out: 0.7 is not 7 and not 0.07; tenths sit in the first place after the point.
Langkah 3

Semak dengan garis nombor

Jika kedua-dua nilai berada pada titik yang sama, nilainya sama; jika tidak, titik kanan lebih besar.

7/10010.77/10 = 0.7
Semak dengan garis nombor = 用数线检查
在0到1的数线上分10小格,把分数和小数各标一个点。两个点落在同一位置,两个值相等;位置不同,右边的点比较大。例子:2/10 在第2格,0.5 在第5格,0.5 在右边,所以 0.5 比 2/10 大。注意:每一小格是 0.1,要从0开始数,不要从1开始数。
Semak dengan garis nombor = check with a number line
Draw a line from 0 to 1 split into 10 small jumps. Mark the fraction and the decimal as points. If both land on the same mark, the values are equal; otherwise the point further right is bigger. Example: 2/10 sits on mark 2 and 0.5 sits on mark 5, so 0.5 is larger. Watch out: each jump is 0.1, so start counting at 0, not at 1.
Semak cepat · Soalan 1 / 2

Cuba sendiri

Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.

Bandingkan 4/10 dengan 0.4.

Bandingkan = 比较
这题要你判断 4/10 和 0.4 哪个大,还是一样大。先把分数改成小数,再看两个数的十分位数字。也可以在数线上各点一个点,看位置。例子:8/10 改写后是 0.8,再和 0.6 比,0.8 较大。注意:不要因为 4/10 写的数字多,就以为它比较大。
Bandingkan = compare
The question asks how 4/10 and 0.4 relate: is one bigger, or are they equal? Rewrite the fraction as a decimal first, then look at the tenths digit of each number. You can also place both on a number line and check their positions. Example: 8/10 becomes 0.8, and 0.8 is bigger than 0.6. Watch out: a fraction is not bigger just because it has more digits.
Semak cepat · Soalan 2 / 2

Cuba sendiri

Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.

Antara 2/10 dengan 0.5, manakah lebih besar?

Manakah lebih besar = 哪个比较大
题目给一个分数、一个小数,问哪个比较大,或两者相等。方法是把 2/10 改写成小数,再和另一个小数比十分位。检查时可看哪个点在数线上更靠右。例子:比较 9/10 和 0.4,9/10 = 0.9,9 比 4 大,所以 9/10 较大。注意:要拿分子去比,别拿分母10去比。
Manakah lebih besar = which is bigger
You get one fraction and one decimal and must decide which is larger, or whether they match. Change 2/10 into a decimal, then compare the tenths digits. To check, mark both on a 0 to 1 number line and see which point lies further right. Example: compare 9/10 and 0.4; 9/10 = 0.9, and 9 tenths beats 4 tenths. Watch out: compare using the numerator, never the denominator 10.
Ringkasan

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Ingat: tukar kepada bentuk sama; nilai yang sama; semak dengan garis nombor.

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