Question

Tính :

a) \(\left(+5\right).\left(+11\right)\)

b) \(\left(-6\right).9\)

c) \(3.\left(-7\right)\)

d) \(\left(-250\right).\left(-8\right)\)

e) \(\left(+4\right).\left(-3\right)\)

Answer 1

a) \(\left(+5\right).\left(+11\right)=\left(+55\right)\)

b) \(\left(-6\right).9=\left(-54\right)\)

c) \(3.\left(-7\right)=\left(-21\right)\)

d) \(\left(-250\right).\left(-8\right)=\left(+2000\right)\)

e) \(\left(+4\right).\left(-3\right)=\left(-12\right)\)

Answer 2

a)\(5.11=55\)

b)\(\left(-6\right).9=-54\)

c)\(3.\left(-7\right)=-21\)

d)\(\left(-250\right).\left(-8\right)=2000\)

e)\(4.\left(-3\right)=-12\)

Answer 3

a)

b)

c)

d)

e)