)12*42=504,21*24=504 2.)24*63=1512,42*36=1512 3.)36*84=3024,
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)12*42=504,21*24=504 2.)24*63=1512,42*36=1512 3.)36*84=3024,63*48=3024
根据上述列式规律再写出3个来.
根据上述列式规律再写出3个来.
62 × 39 = 2418 and 26 × 93 = 2418
63 × 12 = 756 and 36 × 21 = 756
63 × 24 = 1512 and 36 × 42 = 1512
63 × 48 = 3024 and 36 × 84 = 3024
64 × 23 = 1472 and 46 × 32 = 1472
64 × 69 = 4416 and 46 × 96 = 4416
82 × 14 = 1148 and 28 × 41 = 1148
84 × 12 = 1008 and 48 × 21 = 1008
84 × 24 = 2016 and 48 × 42 = 2016
84 × 36 = 3024 and 48 × 63 = 3024
86 × 34 = 2924 and 68 × 43 = 2924
93 × 13 = 1209 and 39 × 31 = 1209
93 × 26 = 2418 and 39 × 62 = 2418
96 × 23 = 2208 and 69 × 32 = 2208
再问: 这是什么规律?谢谢1
再答: 两个因数相乘, 两个因数的个位数和十位数分别对掉,积不变
63 × 12 = 756 and 36 × 21 = 756
63 × 24 = 1512 and 36 × 42 = 1512
63 × 48 = 3024 and 36 × 84 = 3024
64 × 23 = 1472 and 46 × 32 = 1472
64 × 69 = 4416 and 46 × 96 = 4416
82 × 14 = 1148 and 28 × 41 = 1148
84 × 12 = 1008 and 48 × 21 = 1008
84 × 24 = 2016 and 48 × 42 = 2016
84 × 36 = 3024 and 48 × 63 = 3024
86 × 34 = 2924 and 68 × 43 = 2924
93 × 13 = 1209 and 39 × 31 = 1209
93 × 26 = 2418 and 39 × 62 = 2418
96 × 23 = 2208 and 69 × 32 = 2208
再问: 这是什么规律?谢谢1
再答: 两个因数相乘, 两个因数的个位数和十位数分别对掉,积不变
)12*42=504,21*24=504 2.)24*63=1512,42*36=1512 3.)36*84=3024,
12×42=504 24×63=1512 36×84=3024 请帮忙出三组这样的算式 21×24=504 42×36=
12*42=504、21*24=541.24*63=1512、42*36=1512.这几道题你发现了什么规律,试着写几组
21*24=12*42 63*12=36*21有何规律?
找规律真空,21*24=12*42,63*12=36*21,12*84=21*48,根据这些规律推想,列一式
12*42=21×24
24X15=(24+12)X10=( ) 36x15=(36+18)x10 =( ) 42x15=(42+21)x10=
36*14=504,507-504=3
12×42=21×24是什么规律?
12*42=24*21的算式规律是什么
54+36-58+42=
48分之36=24分之()=()分之6=()分之42=()/8=9/()=()