Ta có:

425*27+425*72+425=425*(27+72+1)=425*100=42500

425x27+425x72+425

=425x27+425x72+425x1

=425x(27+72+1)

=425x100

=42500

425 x 27 + 425 x 72 + 425

= 425 x (27 + 72 + 1)

= 425 x 100

= 42500

425 x 32 + 69 x 425 - 425

= 425 x 32 + 69 x 425 - 425 x 1

= 425 x (32+69-1)

= 425 x 100

=  42500

355 x (45+54+1)

355 x 100=

35500

A

A

A

250:0,1=2500

250:10=25

425:100=4,25

425:0,01=42500

250 : 0,1 =2500

250 : 10 = 25 

425 : 0,01 = 42500

425 : 100 = 4,25.

+, 250:0,1=2500

+, 425:0,01=42500

+, 250:10=25

+, 425:100=4,25

a, 355x100+355x100=355x200=71000

b,2004x(45+52+3)=2004x100=200400

425 x 5847 - 125 + 1435 x 425

= 425 x ( 5847 + 1435) - 125

= 425 x 1982 - 125

= 842 225

425 x 5847 - 125 + 1435 x 425

= 425 x ( 5847 + 1435) - 125

= 425 x 1982 - 125

= 842 225

(-325). (425-27) - 425. (27-325) = -2700

Chỉ cách làm cho mk ik

\(\left(-325\right).\left(425-27\right)-425.\left(27-325\right)\)

\(=\text{ }\left[\left(-325\right).425-\left(-325\right).27\right]-\left(425.27-425.325\right)\)

\(=\left(-325\right).425-\left(-325\right).27-425.27+425.325\)

\(=\text{ }\left[\left(-325\right).425+425.325\right]-\text{ }\left[\left(-325\right).27+425.27\right]\)

\(=\text{ }\left\{425.\text{ }\left[\left(-325\right)+325\right]\right\}-\text{ }\left\{27.\text{ }\left[\left(-325+425\right)\right]\right\}\)

\(=\left(425.0\right)-\left(27.100\right)\)

\(=0-2700\)

\(=-2700\)