1、3.5

five

2

2、( 1)

eight

(2)

1.2

3、 170

4、45

5、60

120

6、6

Page 6:

1、 1.5

0.6

0.75

2、30

90

3、400

600

4、9

5、6

6.a: 3,000 pounds

B: 1500

Page 10:

1、

( 1)6

12

eight

(2) rectangle

6 cm

5cm

4 cm

30 square meters

(3) rectangle

7 cm

4 cm

4 cm

square

16c㎡

rectangular

7 cm

4 cm

28c㎡

2、

( 1)

③

(2)

①

3. Omission

Page 1 1:

1、

(1)① positive

six

12

eight

②

four

48

③

square

four

16

(2)① Rectangular

17

five

three

② 15

5 1

Eighty-five

(3) positive

1

six

2

four

three

five

2, 5 cm

25c㎡

3、92÷4=23

23-10-8 = 5cm

Soviet version.