First, read the questions carefully and think about filling in the blanks. (every grid 1 minute, 22 points)
10.2068 billion is written as (), which is rewritten as () million for the number of "ten thousand" and () million for the divisor of "one hundred million".
2.3 The number of ten million, five million and six hundred and two tens is (), which is pronounced as ().
3. The largest six digits of 8, 6, 7, 0, 5 and 1 are (), and the smallest six digits are ().
4. In the formula □ 12÷53, let the quotient be two digits, and □ minimum fill (). To make the quotient a single digit, fill in () at most.
5. At 6 o'clock in the morning, the angle formed by the hour hand and the minute hand is () degrees, which is () angle; At 3 o'clock in the afternoon, the angle formed by the hour hand and the minute hand is () degrees, which is () angle.
6. The algorithm represented by (a+b)+c = a+(b+c) is (); The commutative law of multiplication is written in letters as ().
7. Write 260+80 = 340 and 16×5=80 into a comprehensive formula (), and the result of this comprehensive formula is ().
8. There are () among △△△△△△△△χ, 12 deltas; The 16 position is ().
9. When Xiao Ming calculated the division, he mistook the divisor 36 for 63 and got the quotient 12. Please help him calculate, the correct quotient should be ().
10. The area of a square with a side length of 24 cm is () square cm. If the area of this square is equal to the area of a rectangle with a width of 9 cm, then the length of this rectangle is () cm.
Second, carefully scrutinize and make judgments. (Put "√" in brackets after the question and "×" for the wrong question) (65438+0 point for each question, 5 points)
1. The right angle is a straight line. ( )
2.8 10÷5=(8 10×2)÷(5×2)。 ( )
3.605000 is pronounced as 605000. ( )
When two straight lines intersect at right angles, they are perpendicular to each other. ( )
When you observe an object, you may see the same shape in the same position in different postures. ( )
Third, compare repeatedly and choose carefully. (Fill in the serial number of the correct answer in brackets) (65438+ 0 point for each question, 5 points)
1. Look at the angle of 300 with a magnifying glass that is 10 times, and the angle you see is ().
①30 ②300 ③3000
2. When three digits are divided by two digits, the quotient has at most () digits.
① 1 ②2 ③3
3.54+29+246 = 29+(54+246), where () is used.
① additive commutative law's law of addition ③ additive commutative law's law of addition.
4. Five cubes of the same size are combined into a figure, and at least () squares can be seen from any position.
① 1 ②2 ③3
5. Two people take turns throwing small cubes, and it is agreed that red face up A wins 1 minute, and yellow face up B wins 1 minute. It is fairest to use the () cube below.
①2 red 1 blue 1 green 2 yellow 23 red 1 green 2 yellow 3 1 red 3 blue 2 yellow.
Fourth, be careful. (8+9+ 18 = 35 points)
1. (65438+ 0 points for each question, 8 points)
100-43 56÷ 14 18×5 630÷70
550÷5 69÷3 14×30 24+86
2. Vertical calculation. (3 points for each question, 9 points)
174÷29 793÷6 1 766÷36
3. Calculate the following questions. (If it is simple, it should be calculated by a simple method) (3 points for each question, 18 points)
800-600÷20 18×(537-488) 35× 18
329- 186- 14 25×37×4 720÷ 16÷5
Fifth, watch and think about painting. (2+3 = 5 points)
1. Draw parallel lines and vertical lines of known straight lines through point A .. (2 points)
Answer?
2. Look at the objects below from the front, top and side respectively and draw their shapes. (3 points)
The shape seen from the front is:
The shape seen above is:
Seen from the side, the shape is:
Six, live learning and use, solve problems. (1 5 points for 2, 6 points for 3, 4 and 5, 28 points)
1. 328 fifth-grade students from chengguan primary school visited the agricultural science and technology demonstration park, and 48 students have visited it. The rest take a bus for every 20 people. How many buses do you need?
The school planted some potted flowers. If you put three pots in each classroom, you can put 24 classrooms. If you put four pots in each classroom, how many classrooms can you put?
Thirty-six students and two teachers from Class Four (2) visited the park.
(1) Before them, a family of three (two adults 1 child) bought tickets and used 38 yuan. Known adult ticket 1 ticket 15 yuan. Do you know how much a child ticket 1 ticket costs? (3 points)
(2) Now the teachers take out 300 yuan to buy tickets. Is that enough? (Answer after calculation) (3 points)
4. 220 trees should be planted in the fourth and fifth grades. There are 3 classes in Grade 4, and 28 trees are planted in each class. The rest are assigned to four classes in Grade Five. How many trees are planted in each class on average?
The fruit shop bought 3 baskets of apples, 4 baskets of peaches and 5 baskets of pears. Apples weigh 42kg, peaches 46kg and pears 38kg.
How many kilograms are peaches heavier than apples? (3 points)
(2) How many kilograms are there in pears and peaches?