用遞等式計算寫出必要的計算過程,能簡便用簡便方法計算

2021-03-04 04:41:01 字數 1611 閱讀 8862

1樓:鵲橙尤

(1)45.07+(4.93+8.62),=45.07+13.55,

=58.62;

(2)12.5×(80+0.8),

=12.5×80+12.5×0.8,

=1000+10,

=1010;

(3)34.26+47.7-55.3+2.53,=34.26+(47.7+2.53)-55.3,=34.26+50.23-55.3,

=84.49-55.3,

=29.19;

(4)13.2-180÷45×2.6,

=13.2-4×2.6,

=13.2-10.4,

=2.8;

(5)4.7×2.4+0.

47×58+0.18×47,=4.7×2.

4+4.7×5.8+1.

8×4.7,=4.7×(2.

4+5.8+1.8),

=4.7×10,

=47;

(6)8.9+30.1÷[(5.04+3.56)×0.7],=8.9+30.1÷[8.6×0.7],

=8.9+30.1÷6.02,

=8.9+5,

=13.9.

遞等式計算,寫出必要的計算過程,能簡便計算的用簡便方法計算:(1)7.06×2.4-5.7 (2)5.4×99+5.4

2樓:百度使用者

(1)7.06×

2.4-5.7,

=16.944-5.7,

=11.244;

(2)5.4×99+5.4,

=5.4×(99+1),

=5.4×100,

=540;

(3)9.6×72+9.6×28,

=9.6×(72+28),

=9.6×100,

=960;

(4)(1.25×2.5)×4,

=1.25×(2.5×4),

=1.25×10,

=12.5;

(5)10.4+72×0.81,

=10.4+58.32,

=68.72;

(6)11×0.6×0.4,

=6.6×0.4,

=2.64;

(7)(12.8+4.99)÷0.2,

=17.79÷0.2,

=88.95;

(8)1.25×8+2.5×4.4,

=10+2.5×0.4×11,

=10+11,

=21.

用遞等式計算寫出必要的計算過程,能簡便計算的要簡便計算(1)28×105+7236÷18(2)4.5-3.15+0.5×8(3

3樓:匿名使用者

(1)28×105+7236÷18

=2940+402

=3342

(2)4.5-3.15+0.5×8

=4.5-3.15+4

=5.35

(3)8.5×5.3+3.7×8.5+8.5=8.5×(

5.3+3.7+1)

=8.5×10

=85(4)(0.7+1.7)×15-36=2.4×15-36

=36-36=0

用遞等式計算,寫出必要的計算過程,能簡便運算的要用簡便方法計

100 870 29 88 100 30 88 18 15 7.5 4.6 6.6 2 4.6 6.6 6.6 6.6 0 3.5 64 12.5 3.5 8 內 8 12.5 28 100 2800 容51 7.5 49 7.5 1 51 49 7.5 1 2 7.5 1 15 1 14 4 4....

計算要求寫出主要計算過程

1 2 5.4 31 4 14 3 38 9 2 27 5 13 4 7 3 935 2 108 20 65 20 7 3 935 2 43 20 7 3 935 2 20 43 7 3 935 2 20 43 7 3 9 35 40 43 3 5 24 43 2 10.75 411 12 27 1...

用遞等式計算能簡便計算的用簡便方法計算

1 53.2 6.3 6.3 0.7,53.2 6.3 9,50.5 2 2.5 0.25 0.025 4,2.5 4 0.25 4 0.025 4,10 1 0.1,8.9 3 50 16.9 13 0.6,50 1.3 0.6,48.7 0.6,29.22 4 1.25 0.8 4 25,1.2...