计算下面各题,能简算的要简算.87-2.123-0.877 95.6-(26.3-8.3)6....
计算下面各题,能简算的要简算.87-2.123-0.87795.6-(26.3-8.3)6.74+12.62+24.38+3.26428×78+572×78216+32×...
计算下面各题,能简算的要简算.87-2.123-0.877 95.6-(26.3-8.3)6.74+12.62+24.38+3.26428×78+572×78 216+32×7÷28 57×101-57.
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(1)87-2.123-0.877
=87-(2.123+0.877)
=87-3
=84;
(2)95.6-(26.3-8.3)
=95.6-18
=77.6;
(3)6.74+12.62+24.38+3.26
=(6.74+3.26)+(12.62+24.38)
=10+37
=47;
(4)428×78+572×78
=(428+572)×78
=1000×78
=78000;
(5)216+32×7÷28
=216+224÷28
=216+8
=224;
(6)57×101-57
=57×(101-1)
=57×100
=5700.
=87-(2.123+0.877)
=87-3
=84;
(2)95.6-(26.3-8.3)
=95.6-18
=77.6;
(3)6.74+12.62+24.38+3.26
=(6.74+3.26)+(12.62+24.38)
=10+37
=47;
(4)428×78+572×78
=(428+572)×78
=1000×78
=78000;
(5)216+32×7÷28
=216+224÷28
=216+8
=224;
(6)57×101-57
=57×(101-1)
=57×100
=5700.
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