13+2= 14 + 5= 14-5= 17-7=

14-5= 1 1 + 9= 6 + 7= 14-8=

15-7= 9 + 3= 16-8= 12-3=

14-6= 5 + 9= 6 + 7= 16-4=

17-8= 3+4- 1= 5+0+3= 2+7- 1=

Two, fill in the number (38 points)

1, fill in the blanks. (14)

(1) The largest is (), and the smallest is ().

(2) The smallest two digits are ().

(3) The number consisting of ten and eight is (). There are () tens and several ones in 14.

(4)23 has () ten and () one.

(5) The numbers adjacent to 15 are () and ().

(6) Starting from the right side of the digital table, the first digit is () and the second digit is ().

(7)2,12,3,15,6,9, 10,17,5,7, the eighth from the right is (), the sixth is (), and the ninth from the left is ().

2. Fill in the appropriate number in □. (10)

15=□+6 □? 5=4 10+□= 10 16=8+□ 15? □=2

□+8= 13 4+□ =8 □+ □= 14 □+□=9 □+ 6= 17

3. Fill in ○ >,< or =. (each question 10)

13-6○9 12○6+5 14-7○3 13+4○9+5 12-4○4+5

15-7○9 6+7○ 14 6+0○ 10 9-9○ 1 10-6○ 10+6

4. Find a rule to fill in. (4 points)

6、 、 10、 、 。

5、7、9、 、 13、 、 、 。

□△○□△○

▲△▲△△▲

Third, the number of graphics (16 points)

(1) each has several (5 points)

( ) ( ) ( ) ( ) ( )

(2) Fill in (9 points)

1, a * * * has () graphics;

There are (), (), () and ().

2 from the left, the () th;

The () th from the right.

3. The () and () on the left are.

4. I can draw. (2 points)

(1) Draw □ 3 to ○.

○ ○ ○ ○ ○ ○ ○ ○ ○ ○

(2) Drawing△ is 3 less than ☆.

☆ ☆ ☆ ☆ ☆ ☆ ☆