336+28-136= 21X39+87X39-39X9= 48X199÷16= 101X74-74= 怎样用简便计算
3个回答
展开全部
336+28-136
=336-136+28
=200+28
=228
21X39+87X39-39X9
=39X(21+87-9)
=39X100
=3900
48X199÷16
=48÷16X199
=3X(200-1)
=600-3
=597
101X74-74
=74X(101-1)
=74X100
=7400 希望能帮助你,`(*∩_∩*)′
=336-136+28
=200+28
=228
21X39+87X39-39X9
=39X(21+87-9)
=39X100
=3900
48X199÷16
=48÷16X199
=3X(200-1)
=600-3
=597
101X74-74
=74X(101-1)
=74X100
=7400 希望能帮助你,`(*∩_∩*)′
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展开全部
336+28-136
=336-136+28
=228
21X39+87X39-39X9
=39×(21+87-9)
=39×(100-1)
=39×100-39
=3861
48X199÷16
=48÷16×199
=3×199
=3×200-3
=6000-3
=5997
101X74-74=
=74×(101-1)
=7400
=336-136+28
=228
21X39+87X39-39X9
=39×(21+87-9)
=39×(100-1)
=39×100-39
=3861
48X199÷16
=48÷16×199
=3×199
=3×200-3
=6000-3
=5997
101X74-74=
=74×(101-1)
=7400
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展开全部
336+28-136
=336-136+28
=200+28
=228
21X39+87X39-39X9
=39X(21+87-9)
=39X100
=3900
48X199÷16
=48÷16X199
=3X(200-1)
=600-3
=597
101X74-74
=74X(101-1)
=74X100
=7400
=336-136+28
=200+28
=228
21X39+87X39-39X9
=39X(21+87-9)
=39X100
=3900
48X199÷16
=48÷16X199
=3X(200-1)
=600-3
=597
101X74-74
=74X(101-1)
=74X100
=7400
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