六年级简便运算200题(二)

1、8x0.4 x 12.5 x2.50.4x 125x25x0.832 x 125x25125x (8 + 4)(2.5 +25) x 0.43700-2185-81564 x 12575x99+ 7560x ( 15+500)435 + 199931x128 28x31(25 + 250) x4(125x 125) x8170x 4+80x4103x 5699 x 14102x 3649x 80+8067x 9+33x9(13x 8) x 12525x (40x 32)(5x7) x 808x 14x 125x62843 -5984x8x25x 125259 + 468+ 741 + 5323

2、6 2512x15+ 12x357146 363(谈 5)x 607 xn+7 xn258 x82z x (15 x27 ) x：2 a x 101- 18 x8 +8 x827 (28) 15 1010999 935 x 99 +153103321 x4 + 21 x4 - 44253436x35(5518136 - 9)xu 22 x6-6+2-5x6571223118 -63 -13 4-6+3 5 +65+54 3415533x(7 -u z)4535 32532.8+5 9 +7.2+3 9 4 8 +2.25+5 8 +7 7 5 +47 +256531145 167 +16. 3

3、+ 14 +140.75+9/+0.3754+ 95+99 +999554 +99995y +皂)(25 12)5-21417 -12171548.3-156 -466+60.625 x 0.5+5 + 18 2x 62.5%331 8x72n +3182x6.6+2.5 x6| 75.3 x99+75.33x4 +25 -x 7、（ 54 +） +9916913231、- 10 10 -55c 73 233-12 8 242、 0.8 3.6-0.8 0.6-124 4、一45、216. (2.5+ 25) x0.47. 0.78 x99+ 0.78257、8.28 x1029.()x243

4、6881510. - -3 - - x 11、 1.258 10133 1340.8 6.5 2 573 26 2412、 14.8 6.3-6.3 6.5 8.3 3.7413、807 99 80714、1.5 5律 57215、-4816、2424 12 317 0.4 5.2 2 2.2 40% 2.6 5101 5619 1132.6 - 2-125111 -9 3 621、382 101-38223 19.75 1.75 4136-136 -136 0.256219527、1325 16 91.61.69537 12839 21 0.125 20.5、9.259.9132009201

5、03 54 13321.6 1.6 257 c15 2295 11 931、1250.0.033 149 69-149 149 320.9252009312139132009201018202224、262&3032343536小学六年级数学口算题25x 4=0.4 0.31 =1.4x 0.6=1-0.2 =24x 5=0.8+0.16=6.80.3=4.2+6 =8.7+8.7=7.5+1.5=3.1x 0.01=1.8 x0.5=0.14 x10=0.95+1.9=33x0.01=2000 +6500=0.1 +10=3 0.4 =2.20.3 =33+330=10- 0.1 =2.6+

6、0.2=1.24x0=3+1.5 =98+14=1.25 x8=0.45+9= 0.12x 8=25+ 46=0.25 x4=1.4x4=0.1x 0.02 =0.58 +0.33 =2.4 x4= 1+25=7.2+4=40x 30=1.5x0.5 =44+2=0.54+0.18 =4.6+0.6= 9.1480+60=2.1 x4= 90 x900=0.48 +0.16 =+ 1.3= 0.1 x0.5=1.4 x0.5 =30x80=0.5+ 5.3 = 0.75+0.25 =1.7+2.8 =x2.7 =75+ 25= 0.68+0.17 = 0.2 x 0.3 = 0.81.14+0

7、.3 =0.9 +1.8 = 0.22+0.46 =1.6+4= 3.251.6 =9800-980= 100 +7000= 22 +20=6+1.5 = 2.8 x0.2 = 86 -69= 3.46 +0.59 =820+2=2.2x0.3 = 2.2x0.01 =0.15 x 0.6 =350+50=630 +3= 9.5+0.5 =1.4-0.8 =30x 50=52 +35=0.27x 0.2 =60x 0.3 =2.3 x0.1 =12 x 0.05 =3.2+ 1.6 =1 +0.5 =0.21 +0.3 = 28x0.03 =4.1x 0.02 =3.2+8 =14+ 35= 0.96+0.8 = 2.9 x0.03 = 89 -31 =1.4 x 0.5 = 2.23+1.74 =