Ответ:
- \(5.7+6.6=12.3\);
- \(4.8+8.34=13.14\);
- \(3.5+12.87=16.37\);
- \(27+3.7=30.7\);
- \(2.256+0.442=2.698\);
- \(10.75+28.215=38.965\);
- \(5.6+14.158=19.758\);
- \(0.6+0.451=1.051\);
- \(6.53+1.42=7.95\);
- \(8.5-6.7=1.8\);
- \(14.7-7.44=7.26\);
- \(28-16.92=11.08\);
- \(11-0.4559=10.5441\);
- \(7.2-4.783=2.417\);
- \(247\cdot204=50388\), \(50388-50749=-361\), поэтому \(609\cdot(-361)+607\cdot72=-219849+43704=-176145\);
- \(5152:92=56\), \(32832:54=608\), поэтому \(56+608=664\);
- \(1482\cdot14=20748\), \(52\cdot93=4836\), поэтому \(69481+20748-4836-24001=71392\);
- \(859-847=12\), \(1006:12=\frac{503}{6}\), \((183-96)\cdot29=87\cdot29=2523\), поэтому \(\frac{503}{6}+2523=\frac{15641}{6}=2606\frac{5}{6}\).
Ответ: 1) 12,3; 2) 13,14; 3) 16,37; 4) 30,7; 5) 2,698; 6) 38,965; 7) 19,758; 8) 1,051; 9) 7,95; 10) 1,8; 11) 7,26; 12) 11,08; 13) 10,5441; 14) 2,417; 15) −176145; 16) 664; 17) 71392; 18) 2606 5/6.
