1, fill in the blanks in order:

65 66 69

80 70 40

2. Count and write.

( ) ( ) ( ) ( )

Step 3 read it.

87 Pronunciation () 90 Pronunciation ()

100 is pronounced () 18 is pronounced ().

4. One can be changed to ().

One can be exchanged for () one.

5, 6.70 yuan = () yuan () Angle 1 = () point.

The number before 6 and 90 is (), and the number after 90 is ().

7. Make a with the number "5" opposite the number "()"

The "5" of 8 and 35 is in the () position, which means () ().

The two digits of 9 are (), and the smallest two digits are ().

10. 100 has () tens. 10 One is ().

1 1, a row from big to small.

36 28 58 42 70 8 1 65 79 92

()& gt()& gt()& gt()& gt()& gt()& gt()& gt()& gt( )

12, fill in by comparison.

90○90-3 75○75-3 100○90+ 10

78+8○80 42+8○49 30+6○35

50+50○ 100 82-9○70 46-6○42

33○63-40 70+3○37 99+9○99-9

Second, the judgment question. (Mark "√" for the right and "√" for the wrong)

There are nine tens and eight ones in 1 and 98. ( )

2,63 is pronounced as 63. ( )

3. Xiaohong sleeps every night 10. ( )

The big fish is in front of the small fish. ( )

5. 100 is much more than 98. ( )

Third, look at the calculation of four formulas in the picture column.

1、

2.30 yuan, 65 yuan

? Yuan dynasty (1206- 1368)

Column type:

Fourth, solve the problem.

30 yuan, 20 yuan 50

1. How much does it cost to buy a soldier's racket and a football?

Column type:

2. Pay the salesperson 100 yuan. How much should I get back?

Column type:

Can you ask more questions? And answer.

Problems;

Answer: