3429 + 1234 - 32 +12 =
12+12+12+12+123+123+123+123+1234+1234+1234+......+1234567+1234567=?
Ta có: (12*4)+(123*4)+............+(1234567*4)
Có 6 số * với 4
Vậy cách giải là :
(12+123+1234+12345+123456+1234567)*4=5486948
=4.12+4.123+4.1234+4.12345+4.123456+4.1234567=4(12+123+1234+12345+123456+1234567)=4.1371737
=5485948
Bằng 1.000.000.000 bạn nhé
Học tốt.=}
1234+1234-1234+12=?
1234 + 1234 - 1234 + 12
= 2468 - 1234 + 12
= 1234 + 12
= 1246
k giùm chị nha , chị là Q nè !
1234+1234-1234+12=?
= 1246
tk mk nha $_$
1) Tính :
\(\frac{12}{19}+4=?\)
\(1234+9800-9700=?\)
2) So sánh :
\(\frac{10}{32}.............\frac{9}{8}\)
\(\frac{21}{14}................\frac{20}{12}\)
Bài 1 :
12/19 + 4 = 88/19
1234 + 9800 - 9700 = 1334
Bài 2:
10/32 < 9/8
21/14 > 20/12
1)
a)\(\frac{12}{19}\)+4=\(\frac{12}{19}\)+ \(\frac{76}{19}\)=\(\frac{88}{19}\) 1234+9800-9700
=1234+100=1334
2)\(\frac{10}{32}\)<\(\frac{9}{8}\) \(\frac{21}{14}\)<\(\frac{20}{12}\)
\(1.\)
\(\frac{12}{19}\)+ \(4\) = \(\frac{12}{19}\) + \(\frac{4}{1}\) = \(\frac{12}{19}\) + \(\frac{4x19}{1x19}\) = \(\frac{12}{19}\) + \(\frac{76}{19}\)= \(\frac{88}{19}\)
\(1234+9800-9700=11034-9700\)
\(=1334\)
\(2.\)
\(\frac{10}{32}\)\(< \)\(\frac{9}{8}\)
\(\frac{21}{14}\)\(< \)\(\frac{10}{12}\)
tính hợp lí
-1911-(1234-1911)
32.(-39)+16.(-22)
a,-1911-(1234-1911)
=>-1911-1234+1911
=>-1234
b,32.(-39)+16.(-22)
=>16.2.(-39)+16.(-22)
=>16.(-78)+16.(-22)
=>16.(-100)
=-1600
li-----------ke nha
(x-12)(x+12)=1234
=> x2 - 122 = 1234
=> x2 = 1378
=> x = \(\sqrt{1378}\) hoặc x = \(-\sqrt{1378}\)
1234+3879+123+12+12-1=? bao nhiêu
1234 + 1234 +1234 * 3 =
12 345 - 7 000 - 5 345 =
2 * ( 5678 * 2+5678*3 + 5678 * 5 ) =
trình bày cách làm nhé ! ai nhanh mk tick
1234 + 1234 + 1234 x 3 =1234 x 5 = 6170
12345 - 7000 - 5345 = 12345 - (7000 + 5345) = 12345 - 12345 = 0
2 x ( 5678 x 2 + 5678 x 3 + 5678 x 5) = 2 x ( 5678 x 10 ) = 2 x 56780 = 113560
k mình nhe !
1234 +12=?
1234 + 12 =
1234 + 12
= 1246
k cho tớ nha bn
thank you very much