1, a small tree consists of 1 one hundred, four tens, two ones and six percentages. This number is ().
6 in 2.6.35 is in the () position, indicating (), while () is in the tenth position, indicating ().
3, 45 decimeters = () meters 3 yuan zero five points = () yuan.
The product of 4.3.65×7.9 has () decimal places.
5, 89 meters to the original () times is 8.9 kilometers, 8.9 kilometers ten () kilometers () meters.
6. It is known that both internal angles of a triangle are 45, so we can know that this triangle is both a () triangle and a () triangle.
7. According to 952÷34=28, write the numbers of the following formula directly.
9.52÷3.4=( ) 95.2÷0.34=( )
8. Li Shifu processes one part every hour, 5 hours on the first day, 8 hours on the second day, and processes () parts in two days. The next day, () more parts were processed than the first day.
9. Fang Xiaoying is four years old and Li Xiaoling is five years old. X years have passed, and the difference between them is () years.
Right or wrong
1. There are black and white glass balls in your pocket. Take out two at a time, it must be one black and one white. ( )
2. Three lines with lengths of 5cm, 2cm and 4cm can form a triangle. ( )
3. Seen from a dice, the six faces of the dice are marked with 1, 2, 3, 4, 5 and 6 respectively. Party A and Party B roll dice at will. If the upward number is 6, Party A wins. If the number up is not 6, B wins. B is likely to win. ( )
4,2a+3.2 = 3.2 is not an equation. ( )
Multiple choice
1, 4.()5 is about 4.7, so the number in brackets is ().
a、7 B、5 C、6
2. The circumference of a triangle is 24 cm, so the length of any two sides may be () cm.
a、8 B、 16 C、25
3. A triangle has at most () obtuse angles.
a、 1 B、2 C、3
4, 6.72 less than () less than 6.9.
a、6.6 B、6.9 1 C、6.82
5. if a÷0. 1=b×0. 1, and both a and b are greater than 0, then a () b.
A, greater than b, less than c equals
The decimal between 6.9.8 and 9.9 is ().
A, nine B's, 10 C's, countless.
7, in the following formula, the smallest result is ().
a、0.65×3 B、0.65÷3 C、3÷0.65
Best answer
I just wanted to give an answer, but I always thought it was a mistake, so I explained it well. Well, I want to study hard! ! !
1, a small tree consists of 1 one hundred, four tens, two ones and six percentages, and this number is (142.06). Write down percentile, decile, unit, decile and percentile, and then substitute the corresponding numbers to get the answer.
6 in 2.6.35 means (6) (1) and 3 means (3) (110). The first digit to the left of the decimal point is a single digit, and the corresponding number above indicates how many ones there are. The first digit on the right side of the decimal point is not a decimal place, which correspondingly indicates how many decimal places there are. Others and so on.
3, 45 decimeters =(0.45) meters 3 yuan 0.5 points =(3.05) yuan 1 meters = 10 decimeters Jiao Yuan points calculated well, that is money! ! ! ! I don't know, just change more money!
The product of 4.3.65×7.9 has (3) decimal places. No matter how many numbers are multiplied, their decimal places are the sum of all decimal places. Except that sometimes the last decimal place multiplied by "0" is omitted. Then, so count the numbers above and you will know ***3.
5, 89 meters to the original (100) by 8.9 kilometers, 8.9 kilometers ten () kilometers () meters. I don't know what you mean by asking this question.
6. It is known that both internal angles of a triangle are 45, and it can be known that this triangle is both a (straight) triangle and an (isosceles) triangle. The sum of the three internal angles of a triangle is equal to 180 degrees! ! ! And equilateral! !
7. According to 952÷34=28, write the numbers of the following formula directly.
9.52÷3.4=(2.8 ) 95.2÷0.34=(280 )
8. Li Shifu processes one part per hour, which takes 5 hours on the first day, 8 hours on the second day and (13a) parts on two days. The next day, (3a) processed more parts than the first day. Time * Efficiency shows that the first day * * * is 5a, and the first day is 8a. Although you don't know the exact number of a, you can just think of it as a number, so just use it to calculate.
9. Fang Xiaoying is four years old and Li Xiaoling is four years old. X years later, there is a difference of (4) years between them. No matter how young you are, the age gap between you will not change. I don't know, just compare yourself with your friends' ages.
Right or wrong
1. There are black and white glass balls in your pocket. Take out two at a time, it must be one black and one white. (x) Not just two balls, but two colors. How do you know which one to buy?
2. Three lines with lengths of 5cm, 2cm and 4cm can form a triangle. (10) Law: The sum of any two of the three sides of a triangle must be greater than the third side!
3. Seen from a dice, the six faces of the dice are marked with 1, 2, 3, 4, 5 and 6 respectively. Party A and Party B roll dice at will. If the upward number is 6, Party A wins. If the number up is not 6, B wins. B is likely to win. ㈤
4,2a+3.2 = 3.2 is not an equation. (5) This question is not certain. Please look up what an equation is. I am too old to remember. Sorry ~
Multiple choice
1, 4.()5 is about 4.7, so the number in brackets is (6).
A, 7 B, 5 C, 6 4.75 is about 4.8, 4.55 is about 4.6.
2. The circumference of a triangle is 24 cm, so the length of any two sides may be () cm.
A, 8 B, 16 C, 25 is still the above trilateral law.
3. A triangle has at most (1) obtuse angles.
A, 1 B, 2 C and 3 are obtuse angles greater than 90 degrees, because the sum of triangles is 180 degrees, so there is only one. Similarly, there can only be one right angle.
4, 6.72 less than (c) less than 6.9.
a、6.6 B、6.9 1 C、6.82
5. if a÷0. 1=b×0. 1, and both a and b are greater than 0, then a (less than) b.
A, greater than b, less than c equals nothing, so find a substitute.
The decimal between 6.9.8 and 9.9 is (c).
A, 9 b's, 10 c's, and countless decimals are infinite! ! ! !
7, in the following formula, the smallest result is (a).
A, 0.65×3 B, 0.65÷3 C, 3÷0.65 cannot be calculated.