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递等式计算(能简算的要简便运算): 15.68%...

①15.68-(7.78-4.32)-2.32,=15.68-7.78+4.32-2.32,=(15.68+4.32)-(7.78+2.32),=20-10,=10;②0.25×3.2×1.25,=0.25×4×0.8×1.25,=(0.25×4)×(0.8×1.25),=1×1,=1;③9.99×1.01,=(10-0.01)×1.01,=10.1-0.0101,=10.0899;④4.63×1....

原式 =45×68÷15÷17 =(45÷15)×(68÷17) =3×4 =12

=15.68-8.68-6.2 =7-6.2 =0.8

17×40= 100-63= 3.2+1.68= 2.8×0.4= 14-7.4= 1.92÷0.04= 0.32×500= 0.65+4.35= 10-5.4= 4÷20= 3.5×200= 1.5-0.06= 0.75÷15= 0.4×0.8= 4×0.25= 0.36+1.54= 1.01×99= 420÷35= 25×12= 135÷0.5= 3/4 + 1/4 = 2 + 4/9 = 3...

68.15÷(7.84-7.59)怎样简算 解:直接运算最简便, 原式=68.15÷(7.84-7.59) =68.15÷0.35 =6815/35 =1363/7

(1)68+57+32=68+32+57=100+57=157; (2)202×15=(200+2)×15=200×15+2×15=3030; (3)23.57-13.44-9.56=23.57-(13.44+9.56)=23.57-23=0.57; (4)32×125=4×(8×125)=4×1000=4000;(5)32×125×5=4×5×(8×125)=20000; (6)1120÷14÷8=...

68乘15+15乘32等于多少。递等式 解: 68×15+15×32 =15×(68+32) =15×100 =1500

除以0.25即为乘上它的倒数,所以原式=(15.32+4.68)*4=80

44.68-1.9+15.32-4.07(简算) 44.68-1.9+15.32-4.07 =44.68+15.32-1.9-4.07 =44+16-5.97 =60-5.97 =60-6+0.03 =54+0.03 =54.03

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