Bilang menaik = Count up Counting up means adding the same jump each time. Here the jump is 10: 320, 330, 340, 350. The tens digit grows by 1 each time while the ones digit stays the same. Example: Jump by 100: 215, 315, 415, 515, since 215 + 100 = 315. Watch out: When adding 10, only the tens digit changes; the ones digit stays put.
Langkah 2
Bilang menurun
Tolak nilai yang sama setiap kali. Contohnya, bilang menurun lima-lima: 465, 460, 455, 450.
Bilang menurun = Count down Counting down means taking away the same jump each time. Here the jump is 5: 465, 460, 455, 450. The ones digit switches between 5 and 0. Example: Jump back by 2: 136, 134, 132, 130, since 136 − 2 = 134. Watch out: From 460, taking 5 crosses into the tens, so the next number is 455.
Langkah 3
Cari selang dahulu
Bezakan dua nombor bersebelahan untuk mengetahui selangnya.
Cari selang dahulu = Find the jump first To know the jump, subtract the earlier number from the next one. From 208 to 212: 212 − 208 = 4, so the jump is 4. Example: 530, 550, 570: 550 − 530 = 20, so the jump is 20 and the next number is 570 + 20 = 590. Watch out: Check at least two pairs of neighbours to be sure the jump stays the same.
Semak cepat · Soalan 1 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Lengkapkan = Complete the list The question gives 240, 250, 260 and asks for the next number. Find the jump first: 250 − 240 = 10. Then add that jump to the last number, 260. Example: 515, 525, 535, so the next number is 535 + 10 = 545. Watch out: Here the tens digit changes, not the ones digit.
Semak cepat · Soalan 2 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Lengkapkan, bilang menurun = Complete a count down The question gives 615, 610, 605, and the numbers are getting smaller. The jump is 615 − 610 = 5, so take 5 away from 605 to find the next one. Example: 340, 335, 330, so the next number is 330 − 5 = 325. Watch out: The list goes down, so subtract the jump instead of adding it.
Ringkasan
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Ingat: bilang menaik; bilang menurun; cari selang dahulu.