(80 minutes to complete the paper) Score:

1. ingenuity: 38%

1, a number written directly. 5%

9+7.8-3.8= 5÷2×0.8= 0.7+0.4× 1.5=

2.4-2.4÷ 1.2= 0.8+0.8×8= 0.73+0.27× 10=

8.4×0.2+ 1.6×0.2= ( 1.5+0.25)×4=

5.3× 100+ 1000+0. 17= 0.4×7×0. 1+0.2÷0.2=

2. Calculate the following questions in a simple way. 9%

7.8- 1.9+8.2-8. 1 0.45×78.2+20.8×0.45+0.45 27÷0.25

3. Calculation of the following problems. 12%

0. 1÷ 1+ 1÷0.8-0. 1 3.6× 1.25+0.32÷0.4

(0.25+0. 125)÷(0.75×0.4) 58.8÷(0.6×0.7)÷0.02

4. Solve the equation. 6%

9.4x-0.4x = 16.2 0.2x-0.4+0.5 = 3.7

5, text questions. 6%

What is the quotient of the product of (1)6 minus 0.5 times 1.4 divided by 9.24?

⑵9.75 minus 7.29 divided by 0.8 1 and the difference divided by 0.03, what is the quotient?

2. There are many mysteries in the temple of knowledge: 15% (2 points for questions 4 and 5, and the rest 1 point). )

1, subtracting 50.95 10 times is (), and expanding 3.025 times is 302.5 times.

2.5.04×2. 1 The product estimation ratio is 10 (). 4.495 accurate to the percentile is ().

3. When a two-digit number is divided by 35 1, the remainder is 2 1, and the minimum value of this two-digit number is ().

4, 7.5 square decimeter = () square centimeter 30.06 kg = () grams

3 m 9 cm = () m 8.08 t = () t () kg

5. in the following "fill in >,