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# Unit 5 of mathematics, Volume 2, grade 4

Time: September 25, 2018 11:04:38 test questions I want to contribute

Unit 5 of mathematics, Volume 2, grade 4

���� 1�� Calculate carefully�� 36 points) 1. Write the results directly�� 4 points)

����8.4 �� 0.4=0.15 �� 8=0.1 �� 0.01=6.3 �� 0.63=

����0.32 �� 0.8=1.06 �� 2=0.25 �� 3=0.3 �� 0.4=

2. Use vertical formula to calculate (16 points) (4 points for each question of 4, 5 and 6, and 2 points for each other)

����(1)1.25 �� 0.25(2)8.4 �� 0.56=

����(3)8.54 �� 7 (checking calculation) (4) 78.6 �� 11 = (commercial decimal representation)

����(5)5.63 �� 7.8 (keep two decimal places)

3. Recursive equation calculation (12 points)

����16.2 ��( 48.6+5.4) �� 0.50.36 ��[( 6.1-4.6) �� 0.8]

����2.38 ��( fifty-nine point five �� 0.25)37.6-1.5 �� zero point two four

4. Formula calculation�� 4 points)

What is the product of 12.5 times 0.32 divided by 0.4?

What is the quotient of 8.1 plus the sum of 4.5 divided by the difference of 7.5 minus 1.5?

���� 2�� Fill in carefully (19 points)

1. When calculating decimal division, the decimal point of quotient must be aligned with the decimal point of ().

2. 0 divided by a non-zero number still gets (); Divide any two identical numbers (except 0), and the quotient is ().

����3��6.4 �� The highest quotient of 0.04 is in the () position.

4. 5.8657 two decimal places are reserved, and the reserved integer is approximately equal to ().

5. Fill in the appropriate number in brackets.

����0.81 �� 0.9=() �� ninety-six point six �� 0.2=() �� two

����0.78 �� 0.03=() �� thirty point zero eight four �� 0.07=() �� seven

6 and 2 were () times of 0.25 and () 0.03 were 27.9

Among the five numbers 5.454, 5, 5.4, 5, 5, 5, the largest number is (), and the smallest number is ().

8. Fill in ">", "<", or "=" in "0"

����2.4 �� 1.2��2.40.35 �� 0.99��0.350 �� 9.9��9.9

9. For a two digit decimal, the approximate value of one decimal place is 6.8. The maximum of the two decimal places is (), and the minimum is ().

���� 3�� Judge by heart�� Mark "��" for the right and "��" for the wrong�� ����)( 5 points)

1. 0.52666666 is a recurring decimal

����2��1.47 �� The quotient of 1.2 is 1.2 and the remainder is 3

3. The approximate values of 6.20 and 6.2 are the same in size and accuracy

����4��69.7 �� two point five �� 0.4=69.7 ��( two point five �� 0.4)()

����5��37 �� 0.25=(37 �� 4) ��( zero point two five �� 4)()

���� 4�� Use the rounding method to get the approximate value and fill in the table below�� 6 points)

Keep integers one decimal place two decimal places

����9.72 �� eight point zero two

����90.8 �� thirty

���� 5�� Choose one carefully (put the number of the correct answer in brackets)�� 10 points)

1. In the division formula, 0 cannot be used as ().

A, divisor B, quotient C, divisor

2. The following numbers are cyclic decimals

����A��0.151515B��0.1515����.C��0.511512

����3��0.07 �� 0.04 quotient 1, the remainder is ().

����A��3B��0.3C��0.03

The formula of the greatest quotient is.

����A��3.9 �� 1.2B��39 �� 120C��0.39 �� zero point zero one two

5. The quotient of dividing two numbers is 0.28. If the divisor and divisor are reduced by 100 times at the same time, the quotient is ().

����A��0.28B��2.8C��28

6, 2.9995 to the thousandth is ()

����A��2.999B��3.000C��3

7. Among the following numbers, which are not cyclic decimals, are ()

����A��1.48383����B��0.1875875����C��4.252525D��4.

8. In a division formula (the dividend is not 0), when the divisor is greater than 1, the divisor of quotient () is divisor.

A, greater than B, less than C, equal to

What is the quotient of the sum of 9, 3.6 and 2.4 divided by 0.6? The correct formula is ().

����A��3.6+2.4 �� 0.6B��(3.6+2.4) �� 0.6C��0.6 ��( 3.6+2.4)

10. In the following formula, and 7.2 �� The formula of 0.36 is not equal.

����A��720 �� 36B��72 �� 3.6C��7.2 �� zero point zero three six

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