还有竖式
还有竖式
第一组A、列竖式计算:(1)350÷60 (2)780÷26 (3)66×23 (4)895÷35 (5)378÷42 B、混合运算:(1)480-180+60 (2)480-(180+60)(3)360÷40×9 (4)360÷(40×9) (5)90-40×2 第二组A、列...1)125 ×(17 × 8)× 4 2)375 × 480 + 6250 × 48 = 125×8×4×17 =480×(375+625) =1000×68 =480000 =68000
3)25 × 16 ×125 4)13 × 99 =25×2×8×125 =13×(100-1) =50000 5)75000 ÷ 125 ÷ 15 =75×1000÷125÷15 =75÷15×1000÷125 =5×8 =40
7)150 × 40 ÷ 50 =150÷50×40 =3×40 =120 9)210 ÷ 42 × 6 =210÷7÷6×6 =30 11)67 × 21 +18 × 21 + 85 × 79 =21×(67+18)+85×79 =21×85+85×79 =85×(21+79) =8500
13)222222 × 999999 =222222×(1000000-1) =222222000000-222222 =222221777778 15)56000 ÷ (14000 ÷ 16) =56000÷14000×16 =4×16 =64
17)34 × 3535 -35 × 3434 =1300-13 =1287
6)7900 ÷ 4 ÷ 25 =7900÷(4×25) =79 8)5600 ÷(25 × 7) =56×100÷25÷7 =56÷7×100÷25 =32
10)39600 ÷ 25 =396×100÷25 =396×4 =1584
12)321 × 81 + 321 × 19 =321×(81+19) =32100 14)333333 × 333333 =111111×999999
=111111×(1000000-1) =111111000000-111111 =111110888889