怎样算简便就怎样算.①2.43×99+2.43 ②6.8+1.25×6.8×8③(8.14﹣3.75)÷2.5÷4 ④4.58+2.39+(5.42+7.61)⑤6.3÷2.8 ⑥26.7﹣0.5×0.5﹣0.75.
计算,能简算的要简算. (4﹣7.5×)÷0.25÷+0.25×2.8×+1.2÷ 45÷[72×()]7.2+[(7.8+)÷0.4].
下面各题,怎样简便就怎样算. (0.86+0.86+0.86+0.86)×250.2+(3.4+)× 7.6×÷[1.9﹣1.9×(1.9﹣1.9)]74×19+19×25.4.
神机妙算:(怎样简便就怎样算) 4+16÷÷×64﹣1×[﹣(﹣)]×0.53+75%×1.4725×3.2×1.25÷.
递等式计算,怎样简便就怎样算. ①×÷②(﹣)×③0.75÷(+) ④3﹣÷﹣⑤7.8×101⑥(﹣)×(﹣)
19+2.4+2.91+14.6×153﹣0.6×5380.7×8.7+8.07×13.21÷(+)÷÷[(﹣)÷]