拼图-396-8-21

7×10=70,360×2=720,480÷60=8,78÷13=6, 35×2=70,8×12=96,560÷80=7,480÷40=12, 602×39≈24000,398÷21≈20, 478 ÷ 81 ≈ 6,396× 41 ≈ 16000.所以答案是:70,720,8,6,70,96,7,12,24000,20。