Sana Mavzu

b) Yechilishini tushuntiring: 3200 · 3 = 1-usul: 3200·3 = 32·100·3 = 32·3·100 = 96·100 = = 9600 2-usul: 3200·3 = (3000 + 200)·3 = 3000·3 + 200·3 = = 9000 + 600 = 9600

1-misol. Misollarni og`zaki bajarishga harakat qiling.

4·1000 = 4000 300:100 = 3 5000:100 = 50

7·1000 = 7000 600:100 = 6 9000:1000 = 9

2–misol. Qulay usul bilan hisoblang.

1200 · 8 = 9600 2400 · 4 = 9600 2800 · 3 = 14400 4600 · 2 = 9200

6 · 1600 = 9600 5 · 1800 = 9000 4 · 1500 = 6000 2 · 4200 = 8400

3-misol. O‘yinchoqlar do‘konidan sovg‘a uchun 3 ta bir xil o‘yinchoq sotib olindi. Buning uchun necha pul to‘landi? Yechish:

1. 2900 · 3 = 8700 Javob: 8700so`m.

2.3100 · 3 = 9300 Javob: 9300so`m.

3.2700 · 3 = 8100 Javob: 8100 so`m.

4. 3200 · 3 = 9600 Javob: 9600 so`m

4-misol. 2459 + 54 · 100 = 7859 2784 – (537 – 22 · 6) = 2379

56 · 100 + 4570 = 10170 3608 – 12 · 8 + 150 = 3662