
几道简算题6
1.23456+34562+45623+56234+623452.45678+56784+67845+78456+845673.124.68+324.68+524.68+...
1.23456+34562+45623+56234+62345
2.45678+56784+67845+78456+84567
3.124.68+324.68+524.68+724.68+924.68 展开
2.45678+56784+67845+78456+84567
3.124.68+324.68+524.68+724.68+924.68 展开
展开全部
1.23456+34562+45623+56234+62345
= 2×11111+3×11111+4×11111+5×11111+6×11111
=(2+3+4+5+6)×11111
= 222220
2.45678+56784+67845+78456+84567
= 4×11111+5×11111+6×11111+7×11111+8×11111
=(4+5+6+7+8)×11111
= 333330
3.124.68+324.68+524.68+724.68+924.68
= 524.68×5
= 2623.4
= 2×11111+3×11111+4×11111+5×11111+6×11111
=(2+3+4+5+6)×11111
= 222220
2.45678+56784+67845+78456+84567
= 4×11111+5×11111+6×11111+7×11111+8×11111
=(4+5+6+7+8)×11111
= 333330
3.124.68+324.68+524.68+724.68+924.68
= 524.68×5
= 2623.4
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