脱式计算.24+16×11÷81.25×32×2.5(2.8+3.85÷3.5)×0.247+15-37+4510.9-(25+9.6÷4)56÷[1-(34+112)].-数学
题文
脱式计算.
|
答案
(1)24+16×11÷8, =24+176÷8, =24+22, =46; (2)1.25×32×2.5, =1.25×4×8×2.5, =(1.25×8)×(2.5×4), =10×10, =100; (3)(2.8+3.85÷3.5)×0.2, =(2.8+1.1)×0.2, =3.9×0.2, =0.78; (4)
=(
=
=1
(5)10.9-(
=10.9-(
=10.9-2.8, =8.1; (6)
=
=
|