一、直接写出得数。(每题1分,共32分)
$2+10= $ $19-3= $ $16+3= $ $5+( )= 16$
$13-3= $ $5+12= $ $11-10= $ $( )-4= 15$
$3+13= $ $17-4= $ $18-4= $ $( )+3= 13$
$18-6= $ $4+15= $ $3+15= $ $18-( )= 8$
$5+10= $ $17-1= $ $17+2= $ $( )+5= 17$
$14-10= $ $8+10= $ $16-6= $ $( )-9= 10$
$11+6= $ $15-5= $ $11+7= $ $16-( )= 11$
$19-7= $ $10+9= $ $16-2= $ $4+( )= 18$
$2+10= $ $19-3= $ $16+3= $ $5+( )= 16$
$13-3= $ $5+12= $ $11-10= $ $( )-4= 15$
$3+13= $ $17-4= $ $18-4= $ $( )+3= 13$
$18-6= $ $4+15= $ $3+15= $ $18-( )= 8$
$5+10= $ $17-1= $ $17+2= $ $( )+5= 17$
$14-10= $ $8+10= $ $16-6= $ $( )-9= 10$
$11+6= $ $15-5= $ $11+7= $ $16-( )= 11$
$19-7= $ $10+9= $ $16-2= $ $4+( )= 18$
答案:
12 16 19 11
10 17 1 19
16 13 14 10
12 19 18 10
15 16 19 12
4 18 10 19
17 10 18 5
12 19 14 14
10 17 1 19
16 13 14 10
12 19 18 10
15 16 19 12
4 18 10 19
17 10 18 5
12 19 14 14
二、在每组得数较小的算式后面画“√”。(每题2分,共12分)
$\left\{\begin{array}{l} 10+6□ \\ 10+7□ \end{array} \right. $ $\left\{\begin{array}{l} 18-6□ \\ 18-7□ \end{array} \right. $ $\left\{\begin{array}{l} 5+10□ \\ 4+10□ \end{array} \right. $
$\left\{\begin{array}{l} 15-10□ \\ 14-10□ \end{array} \right. $ $\left\{\begin{array}{l} 13+3□ \\ 13-3□ \end{array} \right. $ $\left\{\begin{array}{l} 10-10□ \\ 10-0□ \end{array} \right. $
$\left\{\begin{array}{l} 10+6□ \\ 10+7□ \end{array} \right. $ $\left\{\begin{array}{l} 18-6□ \\ 18-7□ \end{array} \right. $ $\left\{\begin{array}{l} 5+10□ \\ 4+10□ \end{array} \right. $
$\left\{\begin{array}{l} 15-10□ \\ 14-10□ \end{array} \right. $ $\left\{\begin{array}{l} 13+3□ \\ 13-3□ \end{array} \right. $ $\left\{\begin{array}{l} 10-10□ \\ 10-0□ \end{array} \right. $
答案:
√
√
√
√
√
√
√
√
√
√
√
√
三、填表。(每空1分,共6分)
1.


|加数|10| |2|
|加数|4|7| |
|和| |18|17|
2.
|被减数|19| |17|
|减数|4|10| |
|差| |6|7|
1.
|加数|10| |2|
|加数|4|7| |
|和| |18|17|
2.
|被减数|19| |17|
|减数|4|10| |
|差| |6|7|
答案:
1. 14 11 15
2. 15 16 10
2. 15 16 10
四、找规律,写一写。(每空2分,共10分)
1. $19,17,15,( ),( ),9,( )$。
2. $0,2,2,4,6,( ),( )$。
1. $19,17,15,( ),( ),9,( )$。
2. $0,2,2,4,6,( ),( )$。
答案:
1. 13 11 7
2. 10 16
2. 10 16
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