Question

help my,dau coroană și inimă

Answer 1

9×144=(10-1)×144=
10×144-1×144=
1440-144=
1296

11×148=(10+1)×148=
10×148+1×148=
1480+148=1628

9×314=(10-1)×314=
10×314-1×314=
3140-314=
2826

11×921=(10+1)×921=
10×921+1×921=
9210+921=
10131

9×275=(10-1)×275=
10×275-1×275=
2750-275=
2475

11×363=(10+1)×363=
10×363+1×363=
3630+363=
3993