=5.85-(1.75+0.25)
=5.85-2
=3.85
780+220= 900-459= 36×40= 425-273-127=
4×13×25= 420÷70= 25×44= 36×99+36=
① + + +
②10﹣ ﹣
③6.9×2.5+6.9×7.5
④3.76÷0.4÷2.5
⑤27.3﹣1.2﹣8.8
⑥5.5×[0.72÷(4.2÷0.7)]
①73+3.4+27+5.6
②7.25-3.42-1.58
③125×25×32
④363×7+237×7
⑤4300÷25÷4
⑥104×25
17+a+83=a+( )
45×124=124×
32×25=8×(×)
82×19+82=82(19+)
280÷7÷4=280÷( )
674-79-21=674-( )
136-54-46136-(54-46) 101×85100×85+1
1250÷(125×5)1250÷125×5 86×4+8686×5
①143+236+157
②28+136+264+172
③248-123-27
④167+49+33+151
⑤369-89-111
⑥486-76-24-186
①345+124+76
②248-121-27
③4800÷(60×4)
④28×37+37×72
⑤25×57×4
⑥99×58+58
①99×57
②17.96-4.04-7.96
③25×16×125
④44+4.8+156+5.2
⑤7.5×12.5-25×0.75
⑥36×[480÷(93-69)]
①328-165-35
②216+188+84
③306-197
④40×(145-115)
⑤355÷(103-98)
⑥246+38-46