1. $27\div9 = (\ \ \ \ )$,读作( ),可以用口诀( )计算,用这句口诀还可以计算的另一道除法算式是( )。
答案:
3 27除以9等于3 三九二十七 $27\div3 = 9$
2. 一盒巧克力有36块,平均分给6个小朋友,每人能分到( )块;每4块分一份,可以分成( )份。
答案:
6 9
3. 在( )里填上合适的数。
$42\div(\ \ \ \ ) = 6$ $30\div(\ \ \ \ ) = 5$ $24\div4 = (\ \ \ \ )\times3$
$32\div(\ \ \ \ ) = 4$ $7\times(\ \ \ \ ) = 21$ $(\ \ \ \ )\div6 = 4\times2$
$42\div(\ \ \ \ ) = 6$ $30\div(\ \ \ \ ) = 5$ $24\div4 = (\ \ \ \ )\times3$
$32\div(\ \ \ \ ) = 4$ $7\times(\ \ \ \ ) = 21$ $(\ \ \ \ )\div6 = 4\times2$
答案:
7 6 2 8 3 48
4. 将下列算式按照得数从小到大的顺序排一排。
$18\div2$ $14\div2$ $20\div4$ $48\div6$ $54\div9$
( )<( )<( )<( )<( )
$18\div2$ $14\div2$ $20\div4$ $48\div6$ $54\div9$
( )<( )<( )<( )<( )
答案:
$20\div4$ $54\div9$ $14\div2$ $48\div6$ $18\div2$
5. 有一道除法算式,除数是9,商是3,被除数是( )。把被除数的个位数字和十位数字交换位置,除数不变,这时商是( )。
答案:
27 8
1. 直接写出得数。(12分)
$24\div6 =$ $36\div4 =$ $18\div3 =$ $64\div8 =$
$10\div2 =$ $15\div5 =$ $45\div9 =$ $32\div4 =$
$35\div7 =$ $9\div3 =$ $30\div6 =$ $42\div7 =$
$24\div6 =$ $36\div4 =$ $18\div3 =$ $64\div8 =$
$10\div2 =$ $15\div5 =$ $45\div9 =$ $32\div4 =$
$35\div7 =$ $9\div3 =$ $30\div6 =$ $42\div7 =$
答案:
4 9 6 8 5 3 5 8 5 3 5 6
2. 在$\bigcirc$里填上“+”“-”“×”或“÷”。(8分)
$42\bigcirc6 = 7$ $3\bigcirc8 = 24$ $4\bigcirc4 = 3\bigcirc13$
$15\bigcirc3 = 5$ $64\bigcirc8 = 56$ $3\bigcirc6 = 27\bigcirc3$
$42\bigcirc6 = 7$ $3\bigcirc8 = 24$ $4\bigcirc4 = 3\bigcirc13$
$15\bigcirc3 = 5$ $64\bigcirc8 = 56$ $3\bigcirc6 = 27\bigcirc3$
答案:
$\div$ $\times$ $\times$ $+$ $\div$ $-$ $+$ $\div$
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