Har qanday son 1 ga ko`paytirilsa shu sonning o`zi hosil bo`ladi Masalan: 15 • 1 = 15: 23 • 1 = 23: 1• 40 = 40: 1• 87 = 87
Sonlarni 10 ga, 100 ga, 1000 ga, …. Ko`paytirish qanday bo`ladi ?
Har qanday son 10 ga, 100 ga, 1000 ga, …. ko`paytirilsa shu sonning oxiriga 1 ta, 2 ta, 3 ta , …. Nollar qo`yiladi.
Har qanday son 1 ga bo`linsa shu sonning o`zi hosil bo`ladi Masalan: 15 1 = 15: 23 1 = 23: 40 1 = 40:
Son 0 ga bo`linsa qanday natija olinadi ? Nolga bo`lish mumkin emas