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六年级数学简便计算练习题

六年级数学简便计算练习题-(13)

二.用简便方法计算下面各题·(90分.4×20+5×2)

1125-997 998+1246 4+3.2+5+6.8 12-(1+2) 400÷125÷8

25×(37×8)3132527252

(-)×12 1×2× 34×(2+) 125×8.8 4.35+4.25+3.65+3.75

3.4×99+3.4416143154743413

17.15-8.47-1.53 17-3-4 ÷2+× 0.125×0.25×32 22.3-2.45

-5.3-4.55654365975111592

(++)×72 4.25-3-(2-1) 187.7×11-187.7 43×+57.125×-0.5 ×(-÷) 1211187245656143872121

2.42÷+4.58×-4÷3 ×6.6+2.5× -- 4.6+++5.4 2.8++7.2+ -(+)

43311

+2.25++ ++ -+ +-++ 0.75+++0.375 5--1317

45

++++ 48.3-- ×4.25+÷6 0.625×0.5++×62.5% ×÷ +(-1.8)

2.5×(+++) 22×+25×75%-7×0.75 0.25×6

3.5-× ×2.5-× +3.125++ 1125-996

(111+999) ÷[56×(-)] 49.5×-(50-)×0.6 ×+÷+ 45×(+-0.6) 897×-37.5%+104×0.375

314

×(-5.375) 3.5×+1.25×+3.8÷ 71×99 3755+2996 8439+1001 446+295 888+999

72×156-56×72 25×32×125 709×99+709 14. 0.25×48 2.5×0.4×2 299×101 563×999

2×6.6+2.5×6 75.3×99+75.3 4.6×3.7+54×0.37 0.125×+×8.25+12.5% 8.37-3.25-(1.37+1.75) 2100÷20

11―6―1 15―4.25―5 19.82―6.57―3.43 4.6+3+6+5.4 4+2.25+5+7 9.63÷2.5÷4 6÷0.25

3-- ×+× ×+÷ 18×(+) ×7+×5 (-)×(24-)

71251257385857815516527109495623231611245

(×+)÷ ÷[(+)×] ×7+×5 (-)×24-) (×+)÷ ÷[(+)×]5747474715231511323231611245574747471523151

13

(32×+17)÷ (25+)÷+ ×+×+ (21×+×21)× (99+)÷9 ×÷41125434141251816925716916973744110954658

5

1514

÷[(+)×] (+)×30 +3÷ ×-÷ 4-- ×58+×41+

5432111065543121655610959115117818181

54

××- ×+÷ ÷[(-)÷] 235 - 135÷18 ×153 – 0.6×53 (+)÷+7445215465525354852185

710

10 - - + 25×÷× 13.09-8.12-4.88 12×103-4500÷75 ×

[÷(×)] (+)×15×11

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