Question

[Nguyễn Thị Anh Tuyết]

^{1. Tính nhanh}

^{A, 32684 + 41325 + 316 + 675}

^{B, 25 x 18 x 4 x 2}

^{C, 19 x 81 + 19 + 18 x 19}

giúp với =) 

Answer 1

[Nguyễn Lê Phước Thịnh]

a: \(32684+41325+316+675\)

\(=\left(32684+316\right)+\left(41325+675\right)\)

\(=33000+42000=75000\)

b: \(25\cdot18\cdot4\cdot2\)

\(=18\cdot2\cdot\left(25\cdot4\right)\)

\(=36\cdot100=3600\)

c: \(19\cdot81+19+18\cdot19\)

\(=19\left(81+1+18\right)\)

\(=19\cdot100=1900\)

Answer 2

[Phan Văn Toàn]

^{A, 32684 + 41325 + 316 + 675}

^{=(32684+316)+(41325+675)}

=33000+42000

=75000

^{B, 25 x 18 x 4 x 2}

^{=(25x4)x(18x2)}

^=100x36

⁼³⁶⁰⁰

^{C, 19 x 81 + 19 + 18 x 19}

=19x(81+18+1)

=19x100

=1900