First, oral calculation. (2 points for each small question, ***26 points)

6-5= 8-6= 3-2= 6+2= 4+4=

1+4= 9-0= 4+5= 5-5=

4+( )=8 6-( )= 1 ( )-2=5 3+4 14 ⑷ 17-□> 1 1

19, fill in.

The position of (1) 13 is () and the position of 10 is ().

19 has () tens and () ones.

(3) 1 ten plus five is ().

(4) The number consisting of two tens is ().

5] 1 The number greater than 14 is (), and the number of 1 less than 14 is ().

[6] The two numbers adjacent to 17 are () and () respectively.

20. Fill it out.

(1) The long needle on the clock face is the () needle, and the short needle is the () needle.

(2) There are () numbers, () big squares and () small squares on the clock face.

2 1, fill in.

(1) The minute hand just passed 12, the hour hand just passed 7, and just passed ().

(2) 9 o'clock and 3 o'clock are ().

(3) The minute hand is approaching 12, and the hour hand is just approaching 9, so it is almost ().

22. Fill it out.

(1) When the hour hand walks a big grid (), the minute hand walks a big grid ().

(2)3 o'clock, and then 4 o'clock, it is ().

(3) The hour hand and the minute hand coincide at 12, and the time is ().

What are you doing at these moments?

Just after 8 am, I was in _ _.

I am in _ _ at 7 pm.

(3) I was in _ _ at 1: 30 in the afternoon.

23. There were nine books just now. Dad bought him five more, and Xiaoming borrowed two. How many books were there just now?

24. Fill it in.

There are () tens and () ones in 16.

(2) 1 Ten digits and 5 add up to (); 1 10 and () together are ().

(3) The two numbers adjacent to 18 are () and ().

(4) 16 is greater than 10 (). 8 is less than 14 ().

5] 12 The first number is (), and the last number is ().

25. Fill it out.

14 has () ones and () tens.

9 pieces 1 and 1 piece 10 add up to ().

(3) 10 is preceded by the number () and followed by the number ().

There are () tens in 20.

26.guess who I am.

I am younger than 17 and older than 15. I am ().

I am between 14 and 12, and I am ().

27. How many people are there in a * * *

There are eight people behind me. There are six people in front of me.

The first volume of mathematics exercises in the first grade of primary school

I. Fill in the blanks:

( 1)0 1 2 ( ) 4 5 6 7 ( ) 9 10

(2)☆☆☆☆☆☆☆☆☆

A * * * has () ☆, color the middle one red, and there is () ☆ on the right and () on the left.

☆. Circle the five on the left.

(3) In 7, 4, 6, 0, 8, 2, 10, 3, a * * * has a number of (), in which the maximum number is () and the minimum is.

The number of is (), the third number from the left is () and the second number from the right is ().

The order from small to large is □