First, I will fill in.
(Per grid 1 minute, ***25 points)
Second, I will choose
(5 small questions, 6 questions, 1 point per space, ***6 points)
Third, I will do it (* *15 points)
1.(2 points) There are different methods, as long as it is 1 1 yuan 50.
Fourth, I will calculate (29 points)
2. Use vertical calculation. (10)
2 points for each small question calculated in one step. Suggestion: If the vertical position is correct, the horizontal position is misspelled or omitted, subtract 1 minute.
Each small question is divided into two steps to calculate 3 points. Suggestion: 65438+ 0 point per step; If the vertical layout is correct, the number of errors and omissions in the horizontal layout will be reduced by 1 minute.
3. Look at the chart. (7 points)
Question (1)4 points, 2 points for each formula. It is correct to write the unit after the formula because "?" The device is marked at the back.
Question (2)3 points. If the formula is correct, subtract 1 point from the error number.
5. I can solve the problem (5 points for the third question, 4 points for the other party, and 25 points for * * *).
Suggestion: If the formula is correct, subtract 1 minute from the error; The number of answers has not decreased by 0.5 points.