First, the quick calculation wizard.
42÷7= 45÷5= 36÷4= 5 1÷7= 160+90= 7×8-3= 960-400= ? 890-360=
4×9= 1700-800= 65+23=? ? 230+60=
Second, if you think about it carefully, you will fill it in correctly!
1, write the following numbers.
The track of the playground is 240 meters. ()
There are about 4200 languages in the world. (? )
Wenyang Primary School has 126 1 students. ()
Please fill in the correct length unit.
The math workbook is about 5 (? )?
10 Xiao Ming is 148 (? )
The distance from Beijing to Tianjin is about 120 (? )?
A building 27 (? )
3. Unit conversion
3.5 meters = () decimeter? ? 6 cm = () mm
3 m = () cm 9 km = () m
The price of suit is 2678 yuan, the price of women's cheongsam is much higher than it, and the price of sweater is much less than that of suit. What is the price of a cheongsam and a sweater?
5. Fill it out regularly.
( 1)3 160,3270,(),3290,(),33 10。
(2) 1,7, 13, 19,(),(),37,()。
The four digits of 6 are (), and the number of 1 less than 10000 is ().
7. Rectangular (? ) the sides are equal, and all four corners are (? )。
8. The size of the angle has nothing to do with the () on both sides of the angle. The key is to see the size of the angle ().
Third, sentence.
1, when reading 3004, the ` two zeros in the middle only read a "zero". (? )
2. In the numbers 3050, 5030, 5003, 350, 3500 and 53, select 5003. ? (? )
3. at (? )x 7 < 28，(？ ) should fill in 3. ()
4. The result of calculating 42-42÷6 is 0. ? ()
In life, farmers often tie fences into parallelograms. (? )
The second elementary school second grade mathematics volume two.
First, write the number directly. (16 points) 16÷4= 9×7=? 64÷8=? ? 87-9=? ? 5×9= 63-9=
4×9= 65÷9= 50-8= 55÷9= 68-50=? 7×8=
45+9= 42+7=? ? 73+8=? ? 25+ 17=
Fill in the blanks. (16)
1、(? ) 972
Seven (? ) 63?
Five (? ) forty
2. Seven sixes are (? ), 40 has (? ) five.
The product of 3.8×7 is greater than the product of 8×6 ()
4. Adapting 6×4=24 into two division formulas is () and ().
5, 28÷5 dividend is (? ), the divisor is (? ), the quotient is (? ), the remainder is (? )。
6. In the division formula, the divisor and quotient are 7, the remainder is 3 and the dividend is (? )。
7、45÷5=(? ), which means to put (? ) split equally (? ) copies, each copy is (? )。
3. Choose three numbers from 63, 9, 8 and 7, and write two multiplication formulas and two division formulas. (4 points)
(? )×(? )=(? )? ()÷(? )=(? )
(? )×(? )=(? )? ()÷(? )=(? )
Fourth, the judgment question. (Just in (? Mark "√" in the middle and "×" in the wrong) (6 points)
What is four times 1 6? The formula is 6×4. ? ()
2. Calculate 7×3 and 2 1÷3 with the same formula. ()
3,9× 3 means nine 3- linked additions. ()
4、(? ) × 5 < 45 8 can be filled in brackets. ? ()
5. The square desktop has four corners. If one corner is sawed off, there are still three corners left. ? ()
6. In a triangle, draw a line and add two right angles. ? ()
5. Use vertical calculation. (6 points)
33÷6= 9×? 7= ? 20÷? 5=
17+64=? ? 62-23= 73÷8=
6. at (? ). (2 points× 4 = 8 points)
Calculation of 1, 5×7 multiplication formula ()
( 1) 7856? ②? 5735 (3) 5525
How many times is 2.8 4? The formula is ()
①8÷4②4×8? ③8×4
3. Xiaoming's family has collected 15 watermelons, (), how many baskets do you need?
① Three baskets were used. ? ② Each basket contains an average of 5. ③ Put 15 watermelons in a basket.
The calculation result of 4.36÷7 is (? )
①5…… 1? ②6…… 1? ③ 1……6
Seven, (? How much can I fill in? (6 points)
8×(? )