问题
解答题
脱式计算:
|
答案
(1)402-[170-(169-135)],
=402-[170-34],
=402-136,
=266;
(2)72÷[2×(105-87)],
=72÷[2×18],
=72÷36,
=2.
脱式计算:
|
(1)402-[170-(169-135)],
=402-[170-34],
=402-136,
=266;
(2)72÷[2×(105-87)],
=72÷[2×18],
=72÷36,
=2.