| (1)128+35×3, =128+105, =233; (2)700-125×3, =700-375, =325; (3)330÷5+46×7, =66+322, =388; (4)(210+630)÷7, =840÷7, =120; (5)145-150÷2+23, =145-75+23, =70+23, =93; (6)560÷4-630÷7, =140-90, =50; (7)12×(280-80÷4), =12×(280-20), =12×260, =3120; (8)38.7÷9-66.8÷40, =4.3-1.67, =2.63; (9)(135+55)÷(15-7), =190÷8, =23.75; (10)4.5+5.5÷5-3.42, =4.5+1.1-3.42, =5.6-3.42, =2.18; (11)26×4-425÷5, =104-85, =19; (12)(100-51)÷0.07, =49÷0.07, =700; (13)(37×15-55)×8, =(555-55)×8, =500×8, =4000; (14)(445÷5+172)×18, =(89+172)×18, =261×18, =4698; (15)300-(76+40×3), =300-(76+120), =300-196, =104; (16)8.9×200-1.2÷0.06, =1780-20, =1760; (17)522÷(328-319)+42, =522÷9+42, =58+42, =100; (18)
=
=
(19)1-
=
=
|