题目内容
1.25×16=1.25×8+8
×
×
．（判断对错）分析：将1.25×16变形为1.25×2×8，再计算求解，计算1.25×8+8，然后比较数值，即可判断．
解答：解：1.25×16
=1.25×2×8
=2.5×8
=20
而1.25×8+8
=10+8
=18
所以，25×16=1.25×8+8是错误的；
故答案为：×．
=1.25×2×8
=2.5×8
=20
而1.25×8+8
=10+8
=18
所以，25×16=1.25×8+8是错误的；
故答案为：×．
点评：考查了小数乘法，注意灵活应用运算律简便计算．
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