小學(xué)四年級(jí)口算題：小數(shù)乘整十整百數(shù)的乘法

（1）6.7 × 10 =
    （2）8.7 × 40 =
    （3）1.2 × 50 =
    （4）4.9 × 500 =
    （5）5.7 × 50 =
    （6）8.5 × 20 =
    （7）0.8 × 60 =
    （8）1.7 × 60 =
    （9）8.2 × 500 =
    （10）5 × 60 =
    （11）5.7 × 90 =
    （12）6.3 × 200 =
    （13）0.3 × 50 =
    （14）5.3 × 400 =
    （15）9.9 × 80 =