以下是一些五升六奥数简便运算题,带有答案:
1. 13.8÷[(1.5+2.1)×4]
解:13.8÷[(1.5+2.1)$ imes 4] = 13.8 / (3.6 imes 4) = 13.8 / 14.4 = 1
2. 7.2÷[(3.6-2.8)×0.3]
解:7.2÷[(3.6-2.8)$ imes 0.3] = 7.2 / (0.8 imes 0.3) = 7.2 / 0.24 = 30
3. (345-20)÷(15+20)
解:(345-20)÷(15+20)$ = 325 / (35) = 95 / 7 = 9.3$
4. [200-(74+36)]×15
解:[200-(74+36)]×15$ = (200 - 110) imes 15 = 90 imes 15 = 1350$
5. 8×(12÷4)+7
解:8×(12÷4)+7$ = 8 imes 3 + 7 = 24 + 7 = 31$
6. (24+16)÷(4-2)
解:(24+16)÷(4-2)$ = 40 / 2 = 20 / 1 = 20$
7. (24+16)÷(4-2)
解:(24+16)÷(4-2)$ = 40 / 2 = 20 / 1 = 20$
8. [90-(55+25)]÷5
解:[90-(55+25)]÷5$ = (90 - 80) div 5 = 10 div 5 = 2$
1.(7777+8888)÷5- (888-777)×3
=1111×(7+8)÷5-111×(8-7)×3
=1111×3-111×3
=(1111-111)×3
=1000×3
=3000
2.1111×125+25×7777
=1111×125+25×7×1111
=1111×(125+175)
=1111×300
3.2929×22-8888
=29×101×2×11-8×1111
=(29×2)×(101×11)-8×1111
=58×1111-8×1111
=(58-8)×1111
=50×1111
=55550
4.37×37+2×63×37+63×63
=37×37+63×37+63×37+63×63
=37×(63+37)+63×(37+63)
=37×100+63×100
=3700+6300
=10000