19.32-5.56-3.44怎样简便怎样算
怎样简便就怎样计算.4.35+8.6+153.65+1.4=19.32-5.56-3.44=6.25-4.8+3.75-1.2=29.44-(9.44+0.823)75×...
怎样简便就怎样计算. 4.35+8.6+153.65+1.4= 19.32-5.56-3.44= 6.25-4.8+3.75-1.2= 29.44-(9.44+0.823) 75×125×16 45×28+45×37+45×35.
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(1)4.35+8.6+153.65+1.4
=(4.35+153.65)+(8.6+1.4)
=158+10
=168;
(2)19.32-5.56-3.44
=19.32-(5.56+3.44)
=19.32-9
=10.32;
(3)6.25-4.8+3.75-1.2
=(6.25+3.75)-(4.8+1.2)
=10-6
=4;
(4)29.44-(9.44+0.823)
=29.44-9.44-0.823
=20-0.823
=19.177;
(5)75×125×16
=75×125×2×8
=(75×2)×(125×8)
=150×1000
=150000;
(6)45×28+45×37+45×35
=45×(28+37+35)
=45×100
=4500.
=(4.35+153.65)+(8.6+1.4)
=158+10
=168;
(2)19.32-5.56-3.44
=19.32-(5.56+3.44)
=19.32-9
=10.32;
(3)6.25-4.8+3.75-1.2
=(6.25+3.75)-(4.8+1.2)
=10-6
=4;
(4)29.44-(9.44+0.823)
=29.44-9.44-0.823
=20-0.823
=19.177;
(5)75×125×16
=75×125×2×8
=(75×2)×(125×8)
=150×1000
=150000;
(6)45×28+45×37+45×35
=45×(28+37+35)
=45×100
=4500.
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