【人教新课标】二年级上册数学一课一练：6.3 9的乘法口诀（含答案解析）.docx

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1、二年级上册数学一课一练-6.39的乘法口诀一、单选题1.6×9=（  ）A. 27                                         B. 63                                         C. 45                                         D. 542.填上+、－或×、÷．（1）8    3=11（  ）A. －                                          B. ÷                                        

2、   C. +                                          D. ×（2）8    3=24（  ）A. －                                          B. ÷                                           C. +                                          D. ×（3）8    3=5（  ）A. －                                          B. ÷                    

3、                       C. +                                          D. ×（4）9    9=0（  ）A. －                                          B. ÷                                           C. +                                          D. ×（5）9    9=81（  ）A. －                                          B. ÷

4、                                           C. +                                          D. ×（6）9    9=18（  ）A. －                                          B. ÷                                           C. +                                          D. ×3.与7×9-9计算结果相等的算式是(   )。A.  9×7              

5、                         B.  7×8                                       C.  6×9二、判断题4.求5×9和45÷9都用同一句口诀。5.根据“九九八十一”这句口诀可写出两道乘法算式。6.计算7×9和63÷7要用同一句乘法口诀。（  ）三、填空题7.最大能填几？（1）9×________＜38（2）________×5＜448.口算（1）8×6=________（2）8＋6=________（3）8－6=________（4）9×3=________（5）6×8=________9.在括号里填上合适的数．_______

6、_×9＝45________×1＝910.9个4相加是________？算式：________×________＝________11.                （1）在9的乘法口诀中，一个因数增加1，积就增加________．（2）一个数除以7，如果有余数，余数最大是________．四、解答题12.小鸡吃大米．(连一连)13.5个9相加是多少？五、综合题14.看图回答。（1）买4个西瓜要用________元。（2）买5个菠萝和1把香蕉要用________元。（3）买6个苹果需要带________元。六、应用题15.看图回答参考答案一、单选题1.【答案】D【解析】  2.【答案】

7、（1）C（2）D（3）A（4）A（5）D（6）C【解析】请认真计算并注意运算符号．解：(1)8+3=11(2)8×3=24(3)8－3=5(4)9－9=0(5)9×9=81(6)9+9=183.【答案】C【解析】二、判断题4.【答案】正确【解析】【解答】求5×9和45÷9都用同一句口诀：五九四十五，原题说法正确.故答案为：正确.【分析】计算5×9的口诀是“五九四十五”，计算45÷9的口诀也是“五九四十五”，据此判断.5.【答案】错误