# Grade Two # Guided Exam is an important part of primary school mathematics teaching, an indispensable link in students' learning process, a main carrier for students to master knowledge, form skills and develop their abilities, an effective tool to improve students' ability to solve simple practical problems with knowledge, and a main way for teachers to understand students' knowledge. High-quality classroom teaching must be based on high-quality exercises. The following is the relevant information that has not been sorted out. I hope it helps you.

Fill it out carefully one by one. 1, write directly.

480+60= 8 1- 18= 46+ 17+2 1= 1300-400-500=

1300+3000= 1200-800= 47+39+34= 64+(64-3 1)=

82-35= 186-46+36= 102-50-27= 97-(46+2 1)=

2. Calculate 568+(72 1-636), first calculate () method, and then calculate () method.

The sum of three digits of 3 and two digits of 3 is (), and then the smallest three digits are subtracted, and the difference is ().

4. 3 15+244+ 167. When calculating, the sum obtained by adding one digit is (), and you need to enter () in the () bit.

5. There are 198 students in the second grade, 39 students in the first grade are less than those in the second grade, and there are () students in the first and second grades.

Second, think about the calculation order of the following formula, and then calculate. (previously calculated underline ~)

245+476+ 158346-(548-47 1)

7 15-(482+ 159)306+258-247

9 12-678+326679+(567- 123)

42-30÷6437-(237+ 163)

3. How many can I put in brackets?

66+95 >24+ 102+()99+() 19+()98-(36+ 17)>； 22+()

308+(5 17-456)