1樓:匿名使用者
0.02+1.5x6.5÷2.5
=0.02+3x0.5x5x1.3÷2.5=0.02+3.9
=3.92
6.5÷2.5簡便演算法(脫式計算)
2樓:瀛洲煙雨
6.5÷2.5
=(6.5×4)×(2.5×4)
=26÷10
=2.6
簡便計算 3.5x1.5+6.5÷2.5
3樓:雲山霧海
簡便計算 3.5x1.5+6.5÷2.5
3.5x1.5+6.5÷2.5
=5.25+2.6
=7.85
直接計算
(9-0.6)÷(2.5+1.5×3)簡便計算
4樓:皮皮鬼
(9-0.6)÷(2.5+1.5×3)
=8.4÷(2.5+4.5)
=8.4÷7
=1.2
5樓:激情
(9-0.6)/(2.5+1.5x3)
=8.4/(2.5+4.5)
=8.4/7
=1.2
用遞等式計算,能簡算的要寫出簡算過程. (2.5×6+2.5×4)÷5 35.6-2.8+4.4-7.2 0.25×3.2
6樓:ta剋
(1)(2.5×6+2.5×4)÷5,
=2.5×(6+4)÷5,
=2.5×10÷5,
=25÷5,
=5;(2)35.6-2.8+4.4-7.2,=(35.6+4.4)-(2.8+7.2),=40-10,
=30;
(3)0.25×3.2×12.5,
=0.25×4×0.8×12.5,
=(0.25×4)×(0.8×12.5),=1×10,
=10;
(4)7.5÷(1.5+2.5),
=7.5÷4,
=1.875;
(5)0.6×(5+0.6)-1,
=0.6×5+0.6×0.6-1,
=3+0.36-1,
=3.36-1,
=2.36;
(6)3.7×1.25-3.7×0.25,=3.7×(1.25-0.25),
=3.7×1,
=3.7.
用遞等式計算,能簡算的要寫出簡算過程. (2.5×6+2.5×4)÷5 35.6-2.8+4.4-7.2 0.25×3.2×12.
7樓:最強黑客
(1)(2.5×6+2.5×4)÷5,
=2.5×(6+4)÷5,
=2.5×10÷5,
=25÷5,
=5;(2)35.6-2.8+4.4-7.2,=(35.6+4.4)-(2.8+7.2),=40-10,
=30;
(3)0.25×3.2×12.5,
=0.25×4×0.8×12.5,
=(0.25×4)×(0.8×12.5),=1×10,
=10;
(4)7.5÷(1.5+2.5),
=7.5÷4,
=1.875;
(5)0.6×(5+0.6)-1,
=0.6×5+0.6×0.6-1,
=3+0.36-1,
=3.36-1,
=2.36;
(6)3.7×1.25-3.7×0.25,=3.7×(1.25-0.25),
=3.7×1,
=3.7.
用遞等式計算,能簡便的簡便計算
zhi1 7.28 dao1.28 0.25 版 7.28 1.28 0.25,6 0.25,5.75 2 0.64 權6.4 o.64 5.4,0.64 6.4 5.4 0.64 1,0.64 3 26.18 48.6 18 3.5,26.18 2.7 3.5,26.18 9.45,16.73 4...
遞等式計算(能簡便的用簡便方法計算)
1 66 32 16 11 66 11 32 16 6 2 12 2 8400 21 74 26 21 8400 21 74 26 8400 21 100 8400 2100 4 3 101 999 100 1 999 100 999 1 999 99900 999 100899 4 754 52 ...
用遞等式進行計算,能簡便的要簡便簡便計算
1 7.29 4.6 46 1.271,7.29 4.6 4.6 12.71,7.29 12.71 4.6,20 4.6,92 2 28.7 18.6 3.1 0.8,28.7 6 0.8,22.7 0.8,18.16 3 16 5.32 4.68,16 5.32 4.68 16 10,6 4 40...