Question

Hãy tính nhanh 2 câu sau:

Answer 1

Mik ko viết câu b) sorry nhe:<

\(c,=\left(25\times4\right)\left(9\times7\right)=100\times63=6300\)

Answer 2

b=1500000000                                                                                                                        c=6300

Answer 3

b) \(2.4.6.8.50.25.25.125\)

\(=\left(2.50\right)\left(4.25\right)\left(8.125\right)\left(6.25\right)\)

\(=1500000000\)

c) \(25.9.7.4=\left(9.7\right)\left(25.4\right)=63.100=6300\)

Answer 4

b) \(2.4.6.8.50.25.25.125\)

\(=\left(2.50\right)\left(4.25\right)\left(8.125\right)\left(6.25\right)\)

\(=1500000000\)

c) \(25.9.7.4=\left(9.7\right)\left(25.4\right)=63.100=6300\)

Answer 5

b) \(2\times4\times6\times8\times50\times25\times25\times125=\left(125\times8\right)\times\left(25\times4\right)\times\left(50\times2\right)\times25\times6=1000\times100\times100\times150=150.000.000\)

c) \(25\times9\times7\times4=\left(25\times4\right)\times63=100\times63=6300\)