Addition
596+98=
694
375
300+70+5
10 less than 325
315
892-37=
55
300+30+5 (+) 200+50+6=
500+90+1
324+169=
493
255
200+50+5
100 more than 521
621
163-85=
78
200+60+5 (+) 200+60+8=
500+30+3
488+225=
713
760
700+60
10 more than 658
668
405-64=
341
500-266=
234
727+692=
1419
108
100+8 or 100+0+8
10 less than 101
91
300-88=
212
5x5=
25
916+896=
1812
1452
1000+400+50+2
100 less than 134
34
502-167=
335
6x4=
24
797+705=
1502
3521
3000+500+20+1
100 more than 1562
1662
700-679=
21
9x5=
45