A. 用簡便方法計算47x72十47x27十47
47x72十47x27十47
=47x(72十27+1)
=47x100
=4700
B. 47ⅹ74x27的簡便方法
解:47×74×27等於( 93906 )
∵已知需求出47×74×27等於多少
∴47 × 74 × 27
= [47 × (70 + 4)] × 27
= (47 × 70 + 47 × 4)× 27
= (3290 + 188)× 27
= 3478 × 27
= 3478 × (30 - 3)
= 3478 × 30 - 3478 × 3
= 104340 - 10434
= 93906
答:47×74×27等於93906
C. 47×402的簡便方法
簡便計算如下
47×402
=47×(400+2)
=47×400+47×2
=18800+94
=18894
D. 47x72-47x22用乘法分配率怎麼算
47x72-47x22
=47x(72-22)
=47x50
=2350
以上就是簡便計算方法。
E. 47x98的簡便運算
47×98簡便運算是把乘法運算化為減法運算
98=100-2
47×98
=47×(100-2)
=4700-47×2
=4700-98
=4600+(100-98)
=4600+2
=4602