123^34+4356^45=?
234 × 45 × 123 = ?
1234 + 4356 + 1222 = ?
456 ÷ 2 × 235 = ?
234 x 45 x 123 = 1295190
1234 + 4356 + 1222 = 6812
456 : 2 x 235 = 53580
chúc bạn học tốt !
\(234\times45\times123=1295190\)
\(1234+4356+1222=6812\)
\(456:2\times235=53580\)
1-2-2-1-2-1-2-1-2-1--45-4356-42-------32423432---5-45-54535-435-34-5-35-2-5-4-52-5-54-353--3-5--5-34-5-3--4-47-87-8-787-9-76-8--34-54-6----34-3-31-4-31-423-34-1-134-41-4232-431-321------------546-3----------------2315-413-513465146-456-4-164-316361-4363411111111111111=
-4.3634111e+18
HT
@acquybemon
tính nhanh
123 * 34 + 123 * 45 +123 * 20 + 123
123.34+123.45+123.20+123
= 123. (34+ 45+ 20+ 1)
= 123. 100
= 12300
123.34+123.45+123.20+123
=123.(34+45+20+1)
=123.100
=12300
Các tinhs chất:giao hoán,kết hợp,phân phối
123.34+123.45+123.20+123
= 123. (34+ 45+ 20+ 1)
= 123. 100
= 12300
\(\frac{123}{123-45}-\frac{45}{67+34}=?\)
\(\frac{123}{123-45}-\frac{45}{67+34}=\frac{123}{78}-\frac{45}{101}=\frac{2971}{2626}\)
123123−45−4567+34=12378−45101=29712626123123−45−4567+34=12378−45101=29712626
Tính: a) 1074 + 253;b) |-123| + |-75|; c) 245 + |-34| d) (-34)+ (-45).
Tính hợp lí:
a) \(A=\left(\frac{3}{4}-\frac{4}{7}-\frac{5}{6}\right):\left(-\frac{3}{10}+\frac{4}{14}-\frac{-5}{12}\right)\left(\frac{1}{12}-\frac{7}{6}\right)\)
b) 123.(-234+4356-2312)+234.(123-2312)-2312.(-234-123)
a: \(A=\dfrac{63-48-70}{84}:\dfrac{-3\cdot84+4\cdot60+5\cdot70}{840}\cdot\dfrac{1-14}{12}\)
\(=\dfrac{-55}{84}\cdot\dfrac{840}{338}\cdot\dfrac{-13}{12}=\dfrac{55}{1}\cdot\dfrac{10}{338}\cdot\dfrac{13}{12}=\dfrac{275}{156}\)
b: \(=-234\cdot123+123\cdot4356-123\cdot2312+234\cdot123-234\cdot2312+2312\cdot234+2312\cdot123\)
\(=123\cdot4356-123\cdot2312+123\cdot2312=123\cdot4356=535788\)
phân số nào lớn nhất trog các phân sô sau: 5/7; 45/32; 34/45; 50/123
Câu 1 ;123 + 787 =
Câu 2 ; 12346 - 4356 =
Câu 3 ; Tìm y
a} y + 6790 = 97537
b} y - 5689 = 9976432