问题
解答题
|
答案
(1)332×4+68×4,
=(332+68)×4,
=400×4,
=1600;
(2)1.35-0.87+0.65-0.13,
=(1.35+0.65)-(0.87+0.13),
=2-1,
=1;
(3)15×4×25,
=15×(4×25),
=15×100,
=1500;
(4)19.92+14.4-9.92,
=(19.92-9.92)+14.4,
=10+14.4,
=24.4;
(5)78×101,
=78×100+78×1,
=7878;
(6)6.9+0.1-6.9+0.1,
=(6.9-6.9)+(0.1+0.1),
=0+0.2,
=0.2.