324536
1000000000
12+123456789=123456801
125,802,467
How can you add 123456789 to make it 99, place+signs in the same order.
1+12+123+1234+12345+123456+1234567+12345678+123456789+12345678910+1234567891011+123456789101112 =124703839845238 All the operations are addition so all the addition can happen in one step.
123456789 + 123456789 = 246913578
1 357 826 828
324536
123456789 + 36853168 = 160309957
123456789 +987654321 =1111111110
130000+123456789=123586789
456 + 789 + 123 + 123456789 = 123458157
the answer is 1111111110 SOURCE: my brain and a caluculater
1,236,881
123562426786
123456790