tinh gia tri bieu thuc bang cach thuan tien nhat
53.68 * 15.6 - 53.68 *5.6
464 : 4 + 81 x 2
tinh gia tri bieu thuc bang cach thuan tien nhat
\(464\div4+81\times2\)
\(=116+162\)
\(=278\)
Tinh gia tri bieu thuc : 170 + 9 + 6/100 + 3/10 ; tinh bang cach thuan tien : 1/2 : 0.5 - 1/4 : 0.25 + 1/8 : 0.125 - 1/10 : 0.1
tinh gia tri bieu thuc bag cach thuan tien
36,67+13,92+43,65+65,33+86,08+56,35=...
36,67+13,92+43,65+65,33+86,08+56,35=[36,67+65,33]+[13,92+86,08]+[43,65+56,35]
=102+100+100
=302
Tình giá trị biểu thức
36,508×92+36,508×7+36,508
Tinh gia tri bieu thuc bang cach thuan tien nhat :
1. A= 20,11 x 2,4 + 1,4 x 40,22 - 10,05 x 10,4
2. B= 3/ 1x12 + 3/ 3x20 + .... + 3/ 97x9702 + 3/ 98x9900
1) \(A=20,11\times2,4+1,4\times20,11\times2-10,05\times10,4\) (tách 40,22 = 20,11 x 2)
\(=20,11\times\left(2,4+1,4\times2\right)-10,05\times10,4\)
\(=20,11\times5,2-10,05\times5,2\times2\) (tách 10,4 = 5,2 x 2)
\(=5,2\times\left(20,11-20,1\right)\)
\(=5,2\times0,01\)
\(=0,052\)
90872:296
tinh gia tri cua bieu thuc
6- 3\7*14\9=
tinh bang cach thuan tien
3\4*4\7= 3\7* 3\4+3\4=
ai tra loi nhanh thi minh tik cho
\(90872:296=307\)
\(6-\frac{3}{7}\)X \(\frac{14}{9}=\frac{124}{23}\)
\(\frac{3}{4}\)X \(\frac{4}{7}=\frac{3}{7}\)X \(\frac{3}{4}+\frac{3}{4}=\frac{9}{28}+\frac{3}{4}=\frac{15}{14}\)
Tinh gia tri bieu thuc bang cach thuan tien nhat :
A= 1/10 x 2/9 x 3/8 x 4/7 x 5/6 x 6/5 x 7/4 x 8/3 x 9/2
tinh gia tri bieu thuc bang hai cach 347535:45
tinh gia tri cua bieu thuc sau bang cach hop ly 7
=
tinh gia tri bieu thuc bang cach hop li nhat b=1.3.5...............2011.2013/1008.1009..............2014