用竖式计算,除法要验算.178×46=516÷43=
脱式计算,能简算的要简算.(1)807×99+807 (2)(3)0.6+3.1+5.4+6.9 (4).
脱式计算382+49×52÷13 ﹣﹣ 6.58×+3.42÷2.4×(﹣)÷ [4+(﹣0.75)÷]×.
用递等式计算,能简算的要简算.14×75﹣624÷39 (7.6﹣3.6÷2)×1.5 ﹣÷+× +(﹣)÷ 5.8+1.34+0.66+4.2.
脱式计算,能简算的要简算.①10962÷54﹣105 ②0.25×(4.8﹣7.5÷3) ③0.65+2+6.35+④×÷(﹣) ⑤9.07×93﹣9.07+9.07×8 ⑥0.125×(5+0.8)+0.125÷.
脱式计算,能简算的要简算.762﹣408÷4×5 35×+×14 1.5×[0.02÷(2.1﹣2.09)]12.5×8.8 87.58﹣(7.58+3.8) (+)×4+.