3√425
4+3*5/2-5+69*754-425*13-139*2+67/25*796-425+4652*2439/3341+342/653894-426*46341
= 49629,83799- 19741266= - 19691636,16
425 x 27 + 425 x 72 + 425 =............
Ta có:
425*27+425*72+425=425*(27+72+1)=425*100=42500
425x27+425x72+425
=425x27+425x72+425x1
=425x(27+72+1)
=425x100
=42500
425 x 27 + 425 x 72 + 425
= 425 x (27 + 72 + 1)
= 425 x 100
= 42500
TÍNH NHANH 425×32+69×425-425=? Làm nhanh cho em với ạ
425 x 32 + 69 x 425 - 425
= 425 x 32 + 69 x 425 - 425 x 1
= 425 x (32+69-1)
= 425 x 100
= 42500
250 : 0,1 = 425 : 0,01 =
250 : 10 = 425 : 100 =
250:0,1=2500
250:10=25
425:100=4,25
425:0,01=42500
250 : 0,1 =2500
250 : 10 = 25
425 : 0,01 = 42500
425 : 100 = 4,25.
+, 250:0,1=2500
+, 425:0,01=42500
+, 250:10=25
+, 425:100=4,25
Xx(1/2+1/3+1/6)=425
X * ( 1/2 + 1/3 + 1/6 ) = 425
X * ( 5/ 6+ 1/6 ) =425
X * 1 =425
X = 425/1
X=425
X * ( 1/2 + 1/3 + 1/6 ) = 425
X * 1 = 425
X = 425 : 1
X = 425
a : (1/2 + 1/10 + 3/5 )= 425
a:(1/2+1/10+3/5)=425
<=>a:6/5=425
<=>a=425.6/5
<=>a=510
\(a:\left(\frac{1}{2}+\frac{1}{10}+\frac{3}{5}\right)=425\)
\(a:\frac{6}{5}=425\)
\(a=425\times\frac{6}{5}\)
\(a=510\)
\(a:\left(\frac{1}{2}+\frac{1}{10}+\frac{3}{5}\right)=425\)
\(=>a:\left(\frac{5}{10}+\frac{1}{10}+\frac{6}{10}\right)=425\)
\(=>a:\frac{6}{5}=425\)
\(=>a=425.\frac{6}{5}=\frac{2550}{5}=510\)
Tinh nhanh
425*5847-125+1435*425
425 x 5847 - 125 + 1435 x 425
= 425 x ( 5847 + 1435) - 125
= 425 x 1982 - 125
= 842 225
425 x 5847 - 125 + 1435 x 425
= 425 x ( 5847 + 1435) - 125
= 425 x 1982 - 125
= 842 225
142*3+425*5+752/4?
Tính hợp lí:
(-325). (425-27) - 425. (27-325)
\(\left(-325\right).\left(425-27\right)-425.\left(27-325\right)\)
\(=\text{ }\left[\left(-325\right).425-\left(-325\right).27\right]-\left(425.27-425.325\right)\)
\(=\left(-325\right).425-\left(-325\right).27-425.27+425.325\)
\(=\text{ }\left[\left(-325\right).425+425.325\right]-\text{ }\left[\left(-325\right).27+425.27\right]\)
\(=\text{ }\left\{425.\text{ }\left[\left(-325\right)+325\right]\right\}-\text{ }\left\{27.\text{ }\left[\left(-325+425\right)\right]\right\}\)
\(=\left(425.0\right)-\left(27.100\right)\)
\(=0-2700\)
\(=-2700\)