1. 0.03 x 10 = ……………………………………………………………………………………………………… -8 2. 52.2 x 10 =……………………………………………………………………………………………………… -4 3. 516 ล้ำน = ……………………………………………………………………………………………………… 4. 5.78 พันล้ำน = …………………………………………………………………………………………………..