怎样简便就怎样计算:33+125+67+75 (80+8)×25 38×101 (40-4)×25 65×99+65 800÷5÷4

2025-06-26 17:32:34
推荐回答(1个)
回答1:

(1)33+125+67+75
=(33+67)+(125+75)
=100+200
=300;

(2)(80+8)×25
=80×25+8×25
=2000+200
=2200;

(3)38×101
=38×(100+1)
=38×100+38
=3800+38
=3838;

(4)(40-4)×25
=40×25-4×25
=1000-100
=900;

(5)65×99+65
=65×(99+1)
=65×100
=6500;

(6)800÷5÷4
=800÷(5×4)
=800÷20
=40;

(7)125×(27×8)
=(125×8)×27
=1000×27
=27000;

(8)25×48
=25×(4×12)
=(25×4)×12
=100×12
=1200;

(9)101×69-69
=(101-1)×69
=100×69
=6900.