Maths

1. 335 + 362 = 697 4. 326 + 463 =789

                                                                                       300+400=700

   300 + 300 = 600                                                          20+60=80

     30 +   60 =   90                                                          6+3=9

       5 +     2 =     7

2. 435 + 343 =778

   400 + 300=700

30+40=70

5+3=8            5. 353 + 745 = 1098

                                                                         300+700=1000

                                                                               50+40=90

                                                                                3+40=8

3. 343 + 635 =978

300+600=900

40+30=70

3+5=8            6. 443 + 345 =788

                                                                   400+300=700

                                                                    40+40=80

                                                                     3+5=8