Perkalian Istimewa
Syaratnya :
1. Jumlah angka satuannya harus 10
2. Angka puluhannya harus sama
Contoh :
11 × 19 = 209
12 × 18 = 216
13 × 17 = 221
14 × 16 = 224
15 × 15 = 225
21 × 29 = 609
22 × 28 = 616
23 × 27 = 621
24 × 26 = 624
25 × 25 = 625
Perkalian 37
3 × 37 = 111
6 × 37 = 222
9 × 37 = 333
12 × 37 = 444
15 × 37 = 555
18 × 37 = 666
21 × 37 = 777
24 × 37 = 888
27 × 37 = 999
30 × 37 = 1110
Good
BalasHapus