1 一、脱式计算。 16 +23 ×37 421 ×92 -45 ×56 (56 - 512 )×36 13 ×(83 -56 ) (13+19 )× 913 6613 ×12+6613 5356 ×57 517 + 517 ×16 65 × 215 + 215 ÷45 83 ×(13 - 821 × 816 ) 910 ×11- 910 57 ×14 +34 ×57 13 +47 +23 +17 45 ×38 ×59 101×17 -17 2 647 × 48 17 × 34× 7×217 2325 × 1617 +1625 × 117 1 51653 3 51 83259 542 591 5 53523 51211 01 41521 52 5753 5 87748773 91929197 652 053 1 25941 2595 6 23 76 3 3 31 ÷76 +32 ÷76 895341 432 0153 654132 412185 1 367171 38 1 258121 1 357171 38 441421 74435154 6132761 45 (169 +271 )×23+7 12 5 815 ×34 -16 ÷ 12 54 ×56 +16 ×54 32.6×45 +32.6×0.2 4 57 ×16 +27 ÷6 465×463464 18 ×34 +18 ×14 127 -(57 +12 ) [1-(14 +38 )]÷ 41 18 ×58+18 ×42 45 ×47 ×54 -13 59 ×6+49 ÷16 180÷2.5÷4 1 6365983 9798411 1 0932971 2 5 32326141 4365143 31 41 61711 3 2981438343 52593145 523 07533 07 52852 031 01 41522 5685 1 09312165 8949581 95752 1 72 5421 5 31 05431 054 96-3.2×0.5+0.4 9.6÷(9.6×4) 6 2.08×(9.6÷2.4)÷4.8 78×0.69+1.2×6.9+6.9 0.78÷0.25×4 6553321 83818387 13492641 125 × 257 ×143 97 ÷ 21 ÷ 3635 53 × 98 ÷ 85 551 ÷ 71 + 5554 ×7 (13+1513 )÷13 75 × 98 ÷ 215 ×3 2.6×1.9÷2.6×1.9 3)51158(32)]4121(1[ 7 17.64÷4.9+6.73 3.4÷[(1.2+0.5)×5] 0.25×12.5×3.2 656561 54351 6...