用递等式计算:(能巧算的要巧算) 410+312×6 &nb...

2025-03-04 14:43:37
推荐回答(1个)
回答1:

(1)410+312×6
=410+1872
=2282;

(2)(8-5)×625
=3×625
=1875;

(3)897+432-297
=897-297+432
=600+432
=1032;

(4)840÷2×4
=420×4
=1680;

(5)21+563+279+437 
=(21+279)+(437+563)
=300+1000
=1300;

 (6)1423-434-566
=1423-(434+566)
=1423-1000
=423.