3 运动定律与简便运算
下面各题怎样算简便就怎样算.
5.44+17.8+4.56
24.8﹣3.89﹣7.11
47.8﹣(17.8+0.96)
16.78﹣6.5+3.22﹣3.5.
怎样简便怎样算:
①8.35+3.8﹣2.35 ②15.4﹣(5.4+2.3) ③98×45
④16×125×25 ⑤12×69﹣69×2 ⑥(20+8)×25.
简便运算.
7.5+2.7+2.7+2.5+4.3 7.9﹣3.27﹣0.73+1.1 72×125
(80+4)×125 67×88+67×11+67 203×15.
计算下面各题(能简算的要简算)
1.25×3.2×2.5 1.8×5.6+44×0.18 3.4×99+3.4
101×8.3﹣8.3 (27÷1.8﹣11)×2.5 39.4×[0.96÷(5.4÷0.9)].
用你喜欢的方法计算.
15×35+15×65
25×125×32
1300÷25÷4
(25×120)×4
78×99
1200÷[(372+88)÷23].
计算下面各题:(能简算的要简算)
6.7+25+3.3+75 103×12 14.85﹣(4.85+2.5) 15×99+15
(125+25)×8 2000÷125÷8 300﹣125+30×5 432÷12÷(57﹣51)
704﹣(53﹣18)×12 458﹣75×4+132 (459﹣27×5)÷36 (200+350)÷11×38.
用简便方法计算.12%
301×79
125×72×4
728×79十272×79
8.59+2.57+3.43+5.47
49.62+27.17﹣19.62
1546﹣(546﹣239)
怎样简便怎样算:
①178.4﹣45.3﹣54.7 ②456﹣(256﹣144) ③102×45 ④32×125×25
⑤43×99+43 ⑥(40+8)×25 ⑦73×99 ⑧54×11﹣54.
脱式计算.(能简算的用简算)
(1)25×4.4 (2)7.7×0.16÷7.7×12.5 (3)10.64÷(3.7﹣2.9)
(4)4.8×99+4.8 (5)47.3+21×(3.9﹣0.87) (6)5×[(68.41﹣32.17)÷0.4].
计算下面各题,能简算的要简算.
①1.29+3.7+0.71+6.3 ②3200÷4÷25 ③400﹣(1300÷65+35)
④23.4﹣8.54﹣1.46 ⑤6.75+0.5﹣4.86 ⑥19×36﹣36×9
⑦125×32×25 ⑧(320+280)÷50×4 ⑨(117+63)×(84÷7)
计算下列各题(能简便的要简便)
49×49+49 (24×15﹣290)÷5 271×24﹣24×171 88×125
32×[168﹣(89+43)] 1200÷25 101×32.
脱式计算(能简算的要简算)
(1)1 375+450÷18×25 (2)
(3)9.08×101
(4)1.21×42﹣(4.46+0.14) (5)
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