2.02+8.5脱式计算

伊勉律12002.02x8.5的简便算法是什么 -
隗陆彬19445785853 ______ =2*8.5+0.02*8.5=17+0.17=17.17

伊勉律1200脱式计算 (25.8+3.5*10.6)÷7.4 6.8*[15 - (2.54+5.16)](9.5 - 3.72)÷1.7*0.45 [10.29 - (9.6 - 1.78)]÷0.38. -
隗陆彬19445785853 ______[答案] (1)(25.8+3.5*10.6)÷7.4, =(25.8+37.1)÷7.4, =62.9÷7.4, =8.5; (2)6.8*[15-(2.54+5.16)], =6.8*[15-7.7], =6.8*7.3, =49.64; (3)(9.5-3.72)÷1.7*0.45, =5.78÷1.7*0.45, =3.4*0.45, =1.53; (4)[10.29-(9.6-1.78)]÷0.38, =[10.29-7.82]÷0.38, =2.47÷0.38, =6.5.

伊勉律1200脱式计算:(能简算的要写出主要简算步骤) 2.87+5.6 - 0.87+4.4               1.25*0.25*32            18.5 - 7.35 - 2.65 68*... -
隗陆彬19445785853 ______[答案] (1)2.87+5.6-0.87+4.4 =(2.87-0.87)+(5.6+4.4) =2+10 =12 (2)1.25*0.25*32 =1.25*0.25*4*8 =(1.25*8)*(0.25*4) =10*1 =10 (3)18.5-7.35-2.65 =18.5-(7.35+2.65) =18.5-10 =8.5 (4)68* 5 69 =(69-1)* 5 69 =69* 5 69-1* 5 69 =5- 5 69 =4 64 69 (5) 3 8*25+0....

伊勉律1200脱式计算(1)0.175÷0.25*4(2)54÷(3.94+6.86)(3)12.8+2.04*9.5(4)4.5*0.9+5.5*0.9. -
隗陆彬19445785853 ______[答案] (1)0.175÷0.25*4, =0.7*4, =2.8; (2)54÷(3.94+6.86), =54÷10.8, =5; (3)12.8+2.04*9.5, =12.8+19.38, =32.18; (4)4.5*0.9+5.5*0.9, =(4.5+5.5)*0.9, =10*0.9, =9.

伊勉律12002.8*1.35的简便运算脱式 -
隗陆彬19445785853 ______ 2.8*1.35的简便运算脱式 2.8*1.35 =3.78 直接计算 没有简算

伊勉律1200脱式计算.(能简算的 脱式计算.(能简算的要简算) (1)4.5*10.2 (2)(5.6+0.28)÷0.7 (3)51.6÷[(5.4 - 3.25)*0.8] (4)1.8*3.76+1.24*1.8 +0.5 -
隗陆彬19445785853 ______[答案] (1) 4.5*10.2 =4.5*(10+0.2) =4.5*10+4.5*0.2 =45+0.9 =45.9(2) (5.6+0.28)÷0.7 =5.6÷0.7+0.28÷0.7 =8+0.4 =8.4(3) 51.6÷[(5.4-3.25)*0.8] =51.6÷[2.15*0.8] =51.6÷1.72 =30(4) 1.8*3.76+1.24*1.8 +0.5 =1.8*(3.76+1.24)+0.5 =1.8*5+0.5 =9.5

伊勉律12002.02*8.5= 求简便运算
隗陆彬19445785853 ______ =(2+0.02)x8.5=2x8.5+0.02x8.5=17+0.17=17.17

伊勉律1200 脱式计算 56 - 8*5 (25+78)*7 (36 - 12)*9 16*7*9 568+560÷7. -
隗陆彬19445785853 ______[答案] (1)56-8*5, =56-40, =16; (2)(25+78)*7, =103*7, =721; (3)(36-12)*9, =24*9, =216; (4)16*7*9, =112*9, =1008; (5)568+560÷7, =568+80, =648.

伊勉律1200脱式计算.(能简算的简算) (20+8.5)÷15 (2.3÷0.46 - 4.5)÷0.25 -
隗陆彬19445785853 ______ (20+8.5)÷15=28.5÷15=1.9 (2.3÷0.46-4.5)÷0.25=(5-4.5)÷0.25=0.5÷0.25=22.65*1.7+1.35*1.7=1.7*(2.65+1.35)=1.7*4=6.84.8*0.9+0.48=4.8*0.9+4.8*0.1=4.8*(0.9+0.1)=4.8*1=4.8

伊勉律12002.02*8.5怎么简便计算
隗陆彬19445785853 ______ =2x8.5+0.02x8.5=17+0.017=17.017