4. 18·7 17·8 19·6 106·7 – 107·6 203·4 – 204·3 150·6 – 160·5 180 – 120·5:6 210 – 140·5:7 240 – 160·5:8

Решаем примеры:

• 18 ⋅ 7 = 126
• 17 ⋅ 8 = 136
• 19 ⋅ 6 = 114
• 106 ⋅ 7 – 107 ⋅ 6 = 742 – 642 = 100
• 203 ⋅ 4 – 204 ⋅ 3 = 812 – 612 = 200
• 150 ⋅ 6 – 160 ⋅ 5 = 900 – 800 = 100
• 180 – 120 ⋅ 5 : 6 = 180 – 600 : 6 = 180 – 100 = 80
• 210 – 140 ⋅ 5 : 7 = 210 – 700 : 7 = 210 – 100 = 110
• 240 – 160 ⋅ 5 : 8 = 240 – 800 : 8 = 240 – 100 = 140