Latihan
Latihan tambahan
3 soalan untuk mengukuhkan unit Akal Pintar. Jika salah, baca petunjuk dan cuba lagi.
Adakah 480 × 9 ÷ 3 sama dengan 480 × 15 ÷ 5?
约简比较 = permudahkan dan banding
两个算式的被乘数都是 480,只是乘数和除数不同。分别把乘数除以除数,看看两个算式各等于 480 乘几,再比较这两个数。
例子:70 × 8 ÷ 4 和 70 × 12 ÷ 3 → 70 × 2 和 70 × 4,不相等。
注意:乘数比较大,不代表整个算式比较大,因为除数也可能比较大。
simplify and compare = permudahkan dan banding
Both sentences start with 480; only the multiplier and the divisor differ. Divide each multiplier by its divisor to see what 480 is multiplied by in each sentence, then compare those numbers.
Example: 70 × 8 ÷ 4 and 70 × 12 ÷ 3 become 70 × 2 and 70 × 4, so they are not equal.
Watch out: a bigger multiplier does not mean a bigger result, because the divisor may be bigger too.
Manakah lebih besar: 600 × 12 ÷ 4 atau 600 × 10 ÷ 2?
不相等的情况 = apabila tidak sama
两个算式的被乘数一样,所以只要比较“乘数 ÷ 除数”得到的数。分别算出这两个数:哪一个比较大,哪一个算式的结果就比较大;如果相等,两个算式就一样大。
例子:50 × 8 ÷ 2(等于 50 × 4)比 50 × 9 ÷ 3(等于 50 × 3)大。
注意:约简以后再比较,不必把两个大积都算出来。
when they are not equal = apabila tidak sama
Both sentences start with the same number, so compare only multiplier ÷ divisor. Work out that number for each: the bigger one gives the bigger result, and if they are the same, the sentences are equal.
Example: 50 × 8 ÷ 2 (which is 50 × 4) is bigger than 50 × 9 ÷ 3 (which is 50 × 3).
Watch out: simplify before comparing; there is no need to work out both big products.
1 250 × 14 ÷ 7 = 1 250 × □. □ = ?
找出约简后的数 = cari nombor selepas dipermudahkan
等号两边都有 1 250,所以右边方格里的数,就是左边的乘数和除数约简以后剩下的数:用乘数除以除数。
例子:300 × 20 ÷ 4 = 300 × □ → 20 ÷ 4 = 5,□ 就是 5。
注意:填好方格后,把数代回原式,两边都算一算,看看是否真的相等。
the number after simplifying = cari nombor selepas dipermudahkan
Both sides start with 1 250, so the box on the right holds what is left after simplifying the multiplier and divisor on the left: divide the multiplier by the divisor.
Example: 300 × 20 ÷ 4 = 300 × □; 20 ÷ 4 = 5, so the box holds 5.
Watch out: after filling the box, put the number back into the sentence and work out both sides to check they are equal.
Tahniah! Kamu telah menyelesaikan latihan.
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