1樓:手機使用者
(1)3.58-2.36+1.42-2.64=(3.58+1.42)-(2.36+2.64)=5-5
=0;(2)(14+1
6-13)×
48=1
4×48+1
6×48-1
3×48
=12+8-16
=4;(3)3998+85÷5×37
=3998+17×37
=3998+629
=4627;
(4)12.5×3.2×1
4=12.5×(0.8×4)×1
4=(12.5×0.8)×(4×14)
=10×1
=10.
脫式計算.(能簡算的要簡算,並寫出主要的簡便過程)(1)3.58-2.36-(2.64-1.42)(2)(14+16?13)×12
2樓:楷84修母
(1)3.58-2.36-(2.64-1.42)=3.58-2.36-2.64+1.42
=(3.58+1.42)-(2.36+2.64)=5-5
=0;(2)(14+1
6?13)×
12=1
4×12+1
6×12-1
3×12
=3+2-4
=1;(3)3.6×11
8+8.4÷8
11=3.6×11
8+8.4×11
8=(3.6+8.4)×11
8=12×11
8=332;
(4)3
4÷[3.75×(1.2?15)]
=34÷[3.75×1]=34
÷334=15.
脫式計算下面各題(能簡算的要用簡便方法計算,並寫出簡算過程). (84×27-2166)÷17 115×3.
3樓:小柒
①(84×27-2166)÷17,
=(2268-2166)÷17,
=102÷17,
=6;②11
5×3.7+5.3÷5
11+2.2,
=2.2×3.7+5.3×2.2+2.2,=2.2×(3.7+5.3+1),
=2.2×10,
=22;
③(0.75÷3-0.1)×(1-23),=(0.25-0.1)×13,
=0.15×13,
=0.05.
脫式計算。(能簡算的要簡算)寫出計算過程??謝謝啊 10
4樓:匿名使用者
1.0.9*0.2=0.18
1.8/0.5=3.6
5-0.18=4.82
4.82+3.6=8.42
2.0.55-0.15=0.4
0.75*0.4=0.3
0.783+0.3=1.083
1.083/19=0.057
3.5/6+7/8=20/24+21/24=41/24=1.7081.708/19=0.090
回答完bai
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脫式計算下面各題(能簡算的要用簡便方法計算,並寫出簡算過程). 450÷18×25+173. 670+65÷
5樓:匿名使用者
(1)450÷18×25+173,
=25×25+173,
=625+173,
=798;
(2)670+65÷3×35,
=670+65×(13×3
5),=670+65×15,
=670+13,
=683;
(3)58-1
6×45+57,=58
-215
+57,
=59120
+57,
=5759
120;
(4)38-12×6÷16,
=38-72÷16,
=38-4.5,
=33.5.
脫式計算,(能簡便的要簡便)3.82÷0.2-0.2×2.5,2.4×1.58+6.6×1.58+1.58,0.48×6.5+5.2×0.65
6樓:匿名使用者
3.82÷0.2-0.2×2.5
=38.2÷2-0.5=19.
1-0.5=18.62.
4×1.58+6.6×1.
58+1.58
=1.58x(2.4+6.
6+1)=1.58x10=15.80.
48×6.5+5.2×0.
65=4.8×0.65+5.
2×0.65
=(4.8+5.2)×0.
65=10×0.65=6.512.
4-12.4×0.25=12.
4×(1-0.25)=12.4×3/4=3.
1×3=9.3七分之五-(七分之五-二分之一)=5/7-5/7+1/2=1/20.125×9+1÷8
=9x1/8+1x1/8=(9+1)x1/8=5/4
脫式計算,能簡算的,要簡便方法。 4.32-(1.26+2.34) 4.58-(1.42+2.58) 3.6-1.28+3 5
7樓:翰林書院
4.32-(1.26+2.34)
=權4.32-3.6
=0.72
4.58-(1.42+2.58)
=4.58-1.42-2.58
=4.58-2.58-1.42
=2-1.42
=0.58
3.6-1.28+3
=2.32+3
=5.32
脫式計算(能簡算的要簡算).(1)( 14-120)×40 &...
8樓:桔梗
(1)(14-1
20)×
40 =14
×40-1
20×40
=10-2
=8;(內2)5
7×34×7×2
17=(5
7×7)×(34×217)
=5×4
=20;
(3)13×3
4÷容(34-5
12) =13
×34÷13
=14÷13
=34;(4)99×97
98=98×97
98+1×97
98=97+97
98=979798.
脫式計算,能簡算的要簡算,脫式計算能簡算的,要簡算25加13乘以1589乘
原式 5 9 5 9 3 8 3 8 1 3 8 3 8 9 64 1 8 5 9 3 8 2 9脫式計算過程。1 8 5 9 3 8 2 9脫式計算過程。1 8 3 8 5 9 2 9 1 4 7 9 9 36 28 36 37 36 1 8 3 8 5 9 2 9 4 8 7 9 1 2 7 9...
脫式計算(能簡算的要簡算),脫式計算 (能簡算的要簡算)1840 725 25 16
1 1840 725 25 16,1840 29 16,1840 30 1 16,1840 30 16 16,1360 16,1376 2 278?8 17?917,278 817 917 27 8?1,198 238 3 16.4 3.5 83.6 166.5,16.4 83.6 3.5 166....
脫式計算能簡算的要簡算
1 1.8 2.58 0.5 1.42 1.8 1.8 2.58 1.42 0.5 1.8 4 0.5 7.2 0.5 7.7 2 54.7 17.5 0.45 0.9 37.2 0.5 18.6 3 1.5 0.1 0.2 0.18 0.36 1.5 0.5 0.5 0.75 0.5 0.25 4...