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列式计算.(1)3个235相加的和是多少

3个235相加的和是705 235x3=705 谢谢,请采纳

235-9x8=235-72=163 9个8的和比235少163

(1)235×7=1645(2)649×5=3245(3)580×9=5220(4)407×5=2035

(1)(234+112)÷(6-235),=414÷325,=114,答:商是114;(2)设这个数是x, 60%x=2x-8, 60%x+8=2x-8+8,60%x+8-60%x=2x-60%x, 8=1.4x, 8÷1.4=1.4x÷1.4, x=557,答:这个数是557.

1.235×1.2=1.482

如图

235X8 =235X2X4 =470X4 =400X4+70X4 =1600+280 =1880

10.9+7.32=18.22,10.9 +7.32 18.22 ;100-21.35=78.65,100 -21.35 78.65 验算:78.65 +21.35 100 ;16×0.235=3.76,0.235 ×16 1410 235 3.760 .

10.9+7.32=18.22, 10.9+7.32 18.22;100-21.35=78.65, 100?21.35 78.65 验算:78.65 +21.35100;16×0.235=3.76, 0.235 ×161410235 3.760.

1.235×1.2=1.482

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