Question

Cần giúp gấp vs ạ

 

 

Answer 1

a: \(4167+235=4167+33+202=4200+202=4402\)

b: \(4167+\left(-235\right)=4167-235\)

=(4000+167)-(200+35)

=4000+167-200-35

=4000-200+167-35

=3800+132

=3932

c: \(\left(-4167\right)+\left(-245\right)\)

\(=-\left(4167+245\right)\)

\(=-\left(4167+33+212\right)\)

\(=-\left(4200+212\right)\)

=-4412

d: \(3219-415\)

\(=3219-15-400\)

=3204-400

=2804

e: \(2986-195\)

\(=\left(2900+86\right)-\left(200-5\right)\)

\(=2900+86-200+5\)

\(=2700+81=2781\)

g: \(415-\left(-37\right)=415+37=452\)

h: \(\left(-29\right)-475=-29-475\)

\(=-\left(29+475\right)=-504\)

k: \(\left(-125\right)-\left(-3195\right)\)

=-125+3195

=3195-125

=3070

m: \(1976-48675=-\left(48675-1976\right)=-46699\)

n: \(215-\left(-3456\right)=3456+415=3871\)

o: \(\left(-2195\right)-\left(-468\right)=-2195+468\)

\(=-\left(2195-468\right)=-1727\)

p: \(\left(-7615\right)+429=-\left(7615-429\right)=-7186\)