四年級口算：兩位數(shù)乘一位數(shù)

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    （1）13 × 4 =
    （2）2 × 87 =
    （3）65 × 5 =
    （4）5 × 89 =
    （5）2 × 65 =
    （6）6 × 72 =
    （7）19 × 7 =
    （8）6 × 40 =
    （9）49 × 8 =
    （10）64 × 1 =
    （11）2 × 59 =
    （12）71 × 9 =
    （13）38 × 6 =
    （14）5 × 69 =
    （15）77 × 1 =