Perkalian Bilangan Sampai 100

Bab: Perkalian Bilangan Sampai 100 Perkalian adalah penjumlahan berulang. CARA MENGHAFAL PERKALIAN: - Hafalkan baris kelipatan: Kelipatan 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 Kelipatan 5: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50 Kelipatan 10: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 TRIK PERKALIAN: - × 2: kalikan, lalu kali 2 - × 5: kalikan 10, lalu bagi 2 - × 9: kalikan 10, lalu kurangi angka asli - × 10: tambahkan 0 di belakang Contoh Trik × 9: 7 × 9 = (7 × 10) - 7 = 70 - 7 = 63 8 × 9 = (8 × 10) - 8 = 80 - 8 = 72 SOAL CEPAT: - 12 × 5 = 60 - 15 × 4 = 60 - 25 × 4 = 100 - 18 × 5 = 90 LATIHAN: 1. 14 × 3 = ? 2. 16 × 5 = ? 3. 25 × 3 = ? 4. 18 × 4 = ?