6
Qavsli ifodalar
1.
Yechilishini tushuntiring:
670 + (220 – 120) – 140 = 630
2.
470 – (210 + 110)
780 – (310 + 90) – 110
330 – (220 + 10) 590 – (40 + 20) + 120
3.
Ustun shaklida yechilishini tushuntiring:
4.
240 + 280 450 + 180 460 + 540
620
–
190 450
–
180 760
–
470
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