六年级数学计算题(含简便)、解方程专项训练.doc
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1、递等式计算(能简算的要简算)4 8 18 20 60 66 ()27 50 4 8 18 20 60 66 ()27 50 12 30 9 50 6 17 ()32 () ()16 4472 + + 0.257.890.4 3212.52.5 3.67.2+3.62.8 + 24(+) (+)40 75 63 98 88 23+ 82 48+ +21 (+)24 36+24 ()60 ( )169 + 36(+) + 57 26+ 15+20 2449( ) ()60 4 8 18 20 66 ()27 60 50 4 8 18 20 66 ()27 60 50 30 12 9 50 6 17
2、 ()32 16 4472 21 56 7 5 317 + 3717 1036 (+) 100 13 5 212 2 3 9 322 45 121 12 2449( )3.6 27 + 18 13 12 ()5 1.6 15 + 72 75 63 24 48 28 80.875 150 3.25 2 120 ()5 118 15 3212.52.5 24 + 3.67.2+3.62.8 108 1 11 0.257.890.4 + 7 1 24(+)42 34 (+)40 4 42 +21 35 2 4.5 48+ 17 823 2 3 ()606 2 4 +6 4 5 3717 (+)24
3、7 2 4 36 (+) 3 7 36 5 6 10 6 7 6 10(1) 12 2 15 1 0.498 88 23+ 36(+) 0.80.8 36+24 11 3 5 8 4 24 ()60 4 4 9 ( )1698 5 1 (0.4)(0.5)12 9 2 1- () 11 01 () 0.32 62.4 44 66 () () ( + ) (5) (0.75)0.4 110.25(1) () 36 =30 1414 36( ) (+)9+ 3.25.60.51.250% 8= 654.4=40 2( ) 1.8 -x=45 () 1 += -=14 7-=2 -= 5 += 5
4、2 17 36(-)3 9 - 52 () + -= 12= = =15621 14 + (-9)(+)(1-) 1() 36() (3.2) 1 2-3.25=0.75 (1) 5 12=1 7 1 (1) =3.6 0.2-2.65=8 () +1.5 5 0.92 0.8XX121 5X3 X12 6X5 =13.4 X X= 2X + = 3X= X= XX= 4X6=2 X= X = X = 8 1 463 5X= X= X=5.48+8.73+4.52+0.27 (6.3-6.30.9)6.3X = 4x3 9 = 29 x + x = X21=4 (1514) (+ ) +2.4
5、=6 1.8=2.4 631.8=7.2 175=2.4+3 = 12.62=8 (4.8-1.6+) 180.25+ 6.380.37+0.373.62(1) 7 (+) = +0.5=4 413=314.5+8=27 2+4.33=14 (1) 15+15 25() (+)9+30(+) + + ()(+) 342.5 3163102 47.112.5 0.329.1 x 3+2 13189.247.112.5 = + (+) ()70 9+ 12(1) (1) (1)497 8+2 (+)722.40.452=0.3 6.35=4.1 2.5=0.6 = +1.2=3.4 X(+)= +
6、 = 2 = 31.42=1.1 += 5.53 = 1.75 + = 72(+) 12(+) 4 48(+) 5 (+)6027 = 40 = = + = 18 = 15 (+)= 7 (9+ 24(+) + + 2 30(+) + 2003 10102412 5.21 X = 15 X(1+)= 25(1)X = X = 10 X = 8 X = (1+)= 25 (1) = = 10 = 8 = 15 = 1(+) 3 (1) (+) 25() + = 18 = 24 = 4 74 = 21 = 18 = 10 12(1) (1)4 (+) (1) 8 33 2574 1027.35.1
7、 3441.7 1.25( 2130.8) 700145 18.62.50.4 1.960.54 12.065.072.94 30.349.7610.34 17+7 1 11+7+3 933-15.7-4.3 73+ 8+224(-+) (12+) 7 (7-) 7+(-)12.065.072.94 30.349.7610.34 33 2574 +x = 20 +45 = 12 6X5 =13.4 X-X=()(+) 1(+)3.5 (1)4 + X= X=20 X=12 X=() (+)(1) 3+ +X= X-0.25= 4+0.7X=102 X+X=42 72(+) 2 + + X+X=
8、105 X-X=400 X-0.125X=8 X+X=18 +7 4 (9+) + X( + )= x0.375x= x+=4 XX12+ 2 30(+) +0.365- x = (x- 4.5) = 7 x- 0.8x = 16+6 20 x 8.5= 1.56 +5 12(+) +x- x -4= 21 XX= +2.4=6 1.8=2.44 48(+) 9+ 24(+) 631.8=7.2 175=2.4+3 = 12.62=8(+)6027 5 ()70 97 = 413=31 4.5+8=27 2+4.33=148+2 15+15 (+)72 72(+)(1)1 342.5 3163
9、10225 13.098.124.88 12103450075 () +X = 2X = 3X1.42=1.1 X+=()1511 37.519.52.54 55() 10(43)0.75 5 = = = X 0.6 X =18 525370.4 750.394 1253916 X + 2.58=95 X+30=80 4+ = 9 -= 10199897 X = 24 X = 4 X = 18 7X4X = 21 1352 1364.064.0664 7.021238777.02 4X+x = 20 x+45 = 12 = (+)= 1025.65.62 4710.250.2571 43126
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