(1)3-
(4)18×(+) (5)×7+×5 (6)(-
(
544412117)(×+)÷ (8)÷[(+)×]
777753513
495623231614)×24- 12575535585510- (2)×+× (3)×+÷ 121278871516279888+999×888 12.5×32×0.25 3-÷ ×[
4÷ 4/5= 7/8×6÷7/8 = 6×2/5+6×3/5 =
4558253- 28101331742÷(+)] ÷[1―(―)] 16431553 (1/8+1/4)×16= 1÷5/6= 3/10×4/9= 24%×5=
12 ÷ 3= 10 ÷ 57 = 712 ÷ 74 =
76 × 715 = 32 ÷ 34 = 16 × 34 =
4 × 316 = 1 - 45 =
2. 23 × 60 = 154 × 25 = 38 × 38 =
35 × 527 × 38 = 59 ÷ 5 = 30 ÷ 56 =
815 ÷ 23 = 23 × 54 ÷ 109 =
5/8÷20/21÷7/12 3/4× (17/18-5/9) 4×[(5/6+2/3)÷6 ] 3/7×1/15+4/7÷15 ( 6-1/8×32 )+3/4
3413 -(415 + 25 ) 2 - 38 ÷ 716 - 17 512 ÷ 8 + 18 × 712
34 ÷56 = 13 ÷3= 54 ×23 ×45 =
13 ×9×23 = 67 ÷2= 5÷56 -56 ÷5= 2.7-910 = 6×512 = (1.6+3.2)×0.125= 0.875÷0.125= 756-(256+99)
13 ÷(23 -25 )×35
1215 ×(56 +34 )+45 79 ÷115 +29 ×511 【12 -(34 -35 )】÷710 4×2003+2005×25%+2004×0.75 5/12×28% ×3/14 7/9÷1/2 ÷35/36 3/5 × 8/9÷ 5/8 7÷70% 5/14 ×( 14/25+28) 16/23×27 + 16×19/23 ① ×56× ② 7×30%
1827113③×6% ④12×( + ) ⑤4÷4% 624541145
×3= 8÷ = ÷ = × = 1276658333310.6÷5 = 4-35 = 0.6-5 = 4 ÷2 =
73363747 × + × ÷ + ÷ 134413711711
1225551
÷( - ) +÷ 473993
75161229× ÷ 36×( + )÷
965525
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