怎样计算简便？想一想，算一算。
$(125×65)×8$
$475+386+114$
$34×13+34×87$
$58+147+42$
$58×99+58$
$25×41$

1. $(125×65)×8 = 125×8×65 = 1000×65 = 65000$
2. $475+386+114 = 475+(386+114) = 475+500 = 975$
3. $34×13+34×87 = 34×(13+87) = 34×100 = 3400$
4. $58+147+42 = (58+42)+147 = 100+147 = 247$
5. $58×99+58 = 58×(99+1) = 58×100 = 5800$
6. $25×41 = 25×(40+1) = 25×40 + 25×1 = 1000+25 = 1025$

怎样计算简便？想一想，算一算。
$65×98$
$400÷25$
$5000÷125$
$755-122-78$
$375+219+381+225$
$456-192-108$

1. $65×98=6370$
2. $400÷25=16$
3. $5000÷125=40$
4. $755-122-78=555$
5. $375+219+381+225=1200$
6. $456-192-108=156$