问题
解答题
简便计算.
25×32
73+141+27+69
258-35
560÷16
598+265
25×(3×4)×9.
答案
25×32
=25×(4×8)
=25×4×8
=100×8
=800
73+141+27+69
=(73+27)+(141+69)
=100+210
=310
258-35
=258-(38-3)
=258-38+3
=220+3
=223
560÷16
=560÷(8×2)
=560÷8÷2
=70÷2
=35
598+265
=600-2+265
=600+265-2
=865-2
=863
25×(3×4)×9
=25×3×4×9
=(25×4)×(3×9)
=100×27
=2700