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14.6×0.8×12.5脱式计算

看到8和 125就要想到8×125=1000 =14.6×10 =146

题干不全,无法作答。

(1)78+14×6 =78+84=162;(2)15×8×7 =120×7=840;(3)312×(300-296)=312×4=1248;(4)408÷4-75=102-75=27.

(14-48÷6)×8 脱式计算的答案: 48÷6=8 14-8=6 6×8=48

1. 1/8*14/8/7 =7/4/8/7 =7/4*7/8 =49/*32 2. 9/14/(6/5-3/4)*7/24 =9/14/9/20*7/24 =9/14*20/9*7/24 =20/14*7/24 =5/12 第三小题题目再发准确点行吗

(1)(14+56)×24=14×24+56×24=6+20=26;(2)3-118+117=178+117=3156;(3)137÷114+247×45+45=137×45+247×45+45=(137+247+1)×45=5×45=4;(4)17.6÷[7.8+0.625×(234-1.15)]=17.6÷[7.8+0.625×1.6]=17.6÷[7.8+1]=17.6÷8.8=2.

简单算法: (4.86+5.14)+(2.4+6.6) =10+9 =19 脱式计算: 4.86+2.4+5.14+6.6 =7.26+5.14+6.6 =12.4+6.6 =19

(1)4.7×3.8-14.56=17.86-14.56=3.3; (2)7.25-3.86-2.14=7.25-(3.86+2.14)=7.25-6=1.25;(3)6.73×5.8+4.2×6.73=6.73×(5.8+4.2)=6.73×10=67.3(4)4.9÷[2.6-(12.78-10.88)]=4.9÷[2.6-1.9]=4.9÷0.7=7

4.8x2十6.6x2一14x2 =(4.8十6.6一14)x2 =-2.6x2 =-5.2

(13)2x-8=10 (14)1÷2x-8=4 (15)x-5/6=7 (16)3x+7=28 (17)3x-7=26 (18)9x-x=16 (19)24x+x=50 (20)6÷7x-8=4 (30)3x-8=30 (31)6x+6=12 (32)3x-3=1 (33)5x-3x=4 (34)2x+16=19 (35)5x+8=19 (36)14-6x=8 (37)15+6x=27 (38)5-8x=4 (39)7x+8=15 (40)9-...

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