-472 + (235 - 28) - (35 - 350)

= -472 + 235 - 28 - 35 + 350

= (-472 - 28) + (235 - 35) + 350

= -500 + 200 + 350

= -500 + 550

= 50

a: \(-472+\left(235-28\right)-\left(35-350\right)\)

\(=-472+235-28-35+350\)

\(=\left(-472-28\right)+\left(235-35\right)+350\)

=-500+350+200

=50

b: \(91\cdot172+91\cdot13-91\cdot85\)

\(=91\cdot\left(172+13-85\right)\)

\(=91\cdot100=9100\)

c: \(798-298:\left[19-2\left(5^2-22\right)^2\right]\cdot1^{2023}\)

\(=798-298:\left[19-2\left(25-22\right)^2\right]\)

\(=798-298:\left[19-2\cdot3^2\right]\)

\(=798-298:\left(19-18\right)\)

=798-298

=500

Tham khảo:

a) \(544+362-89\\ =906-89\\ =817\)

b) \(546-422=124\)

c) \(472-125+49\\ =347+49\\ =396\)

\(a,25\times47\times4\times2=\left(25\times4\right)\times\left(47\times2\right)=100\times94=9400\\ b,865\times99+865=865\times\left(99+1\right)=865\times100=86500\\ c,472\times1002-472-472=472\times\left(1002-1-1\right)=472\times1000=472000\\ d,2478+10275+7522-275=\left(2478+7522\right)+\left(10275-275\right)=10000+10000=20000\)

a 9400

b 86500

c 472000

d 20000

sai đề

a: =472x2+472x5+472x2=472x9=4248

b: =28,8+28,8-14,4=43,2

c: =2,4(6,2+3,8)=24