Subtraction of numbers solved

 Subtraction of numbers from 1 to 10 in reverse order

Magic of of maths in subtraction 

1-10=-9

2-9=-7

3-8=-5

4-7=-3

5-6=-1

6-5=1

7-4=3

8-3=5

9-2=7

10-1=9

Addition in doubles

 Simple addition for children 

1+1=2

2+2=4

4+4=8

8+8=16

16+16=32

32+32=64

64+64=128

128+128=256

256+256=512

512+512=1024

1024+1024=2048

2048+2048=4096

4096+4096=8192

8192+8192=16384

16384+16384=32768

32768+32768=65536

65536+65536=131072

131072+131072=262144

262144+262144=524288

524288+524288=1048576

1048576+1048576=2097152

2097152+2097152=4194304

4194304+4194304=8388608

8388608+8388608=16777216

16777216+16777216=33554432

33554432+33554432=67108864

67108864+67108864=134217728

134217728+134217728=268435456

268435456+268435456=536870912

536870912+536870912=1073741824

1073741824+1073741824=2147483648

2147483648+2147483648=4294967296

4294967296+4294967296=8589934592

8589934592+8589934592=17179869184

17179869184+17179869184=34359738368

34359738368+34359738368=68719476736

68719476736+68719476736=137438953472

137438953472+137438953472=274877906944