15×8= 630-70= 18×40=

75÷25= 84÷ 12= 23×6=

80÷20= 0× 130= 12 1÷ 1 1=

98×20= 600×3= 84÷6=

350÷50= 72÷ 12= 13×50=

54+38= 720÷90= 25×8=

400+350= 8 10÷30=

Two. Fill in the blanks (30 points)

1. Use the score to represent the shaded part in the figure below.

2.① 12 square decimeter = () square centimeter

② 8km = () m

③ 500mm = () decimeter

④ 3kg = () g

⑤6000 square decimeter = () square meter

3. Fill in the appropriate units in ().

① Building height 30() ② Ship load 30 ().

③ Xiaohong's height is 140() ④ The ship runs 30 () per hour.

⑤ Xiaoming walks every hour 10()⑤ There is 300 () in a vegetable field.

4. What can I put in the brackets?

①60×( )