1. 5 * ( 240 + 150 ) : 30 + 583 = 648
1) 240 + 150 = 390
2) 390 * 5 = 1950
3) 1950 : 30 = 65
4) 65 + 583 = 648
2. 672318 : 41 - 763 * 17 =3427
1) 672318 : 41 = 16398
2) 763 * 17 = 12971
3) 16398 - 12971 = 3427
3. 119628 - 1356 * 18 : 6 + 87 588 : 9 =
1) 1356 * 18 = 24408
2) 24408 : 6 = 4068
3) 87 588 : 9 = 9732
4) 119628 - 4068= 115560
5) 115560 + 4068 = 125292