Question

估一估43.8×1.9≈ 768.7÷19.4≈ 97×98≈638÷38.7≈ 889+926≈ 867÷29≈461

Answer 1

43.8×1.9≈ 80 768.7÷19.4≈40 97×98≈10000

638÷38.7≈15 889+926≈ 1800 867÷29≈30

461.8+58.2≈ 560 1358-765≈ 600

925.7-78.9≈ 800 97.85÷96.6≈1

42.6×6.4≈ 240 36×29≈1200

52.7÷52.9≈ 1 78÷97≈1

27.65+1846≈ 1900 46.1÷3.9≈12