问题
解答题
递等式计算.
1320÷6×40
(1200-785)×21
4500-103×29
(1280+176)÷7.
答案
(1)1320÷6×40
=220×40
=8800;
(2)(1200-785)×21
=415×21
=8715;
(3)4500-103×29
=4500-2987
=1513;
(4)(1280+176)÷7
=1456÷7
=208.
递等式计算.
1320÷6×40
(1200-785)×21
4500-103×29
(1280+176)÷7.
(1)1320÷6×40
=220×40
=8800;
(2)(1200-785)×21
=415×21
=8715;
(3)4500-103×29
=4500-2987
=1513;
(4)(1280+176)÷7
=1456÷7
=208.