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All questions of Number, Decimal Numbers for Year 4 Exam
How do you read the decimal number 0.75?- a)Three fourths
- b)Zero point seven five
- c)Seven point five
- d)Seventy-five
Correct answer is option 'B'. Can you explain this answer?
How do you read the decimal number 0.75?
a)
Three fourths
b)
Zero point seven five
c)
Seven point five
d)
Seventy-five
 | Vp Classes answered |
The decimal number 0.75 is read as "zero point seven five," which helps clarify the presence of the leading zero in the ones position. This is important for distinguishing the value of the number, especially in mathematical contexts.
What is the value of 1.25 expressed as a fraction?- a)25/100
- b)1/4
- c)5/4
- d)1/2
Correct answer is option 'C'. Can you explain this answer?
What is the value of 1.25 expressed as a fraction?
a)
25/100
b)
1/4
c)
5/4
d)
1/2
 | Yashina Kapoor answered |
The decimal 1.25 can be expressed as a fraction by recognizing it as 125/100, which simplifies to 5/4. This conversion is important for understanding the relationship between decimals and fractions, which is a fundamental concept in mathematics.
In a linear sequence where the term-to-term rule is to subtract 4, what would be the sixth term if the sequence starts at 30?- a)10
- b)22
- c)18
- d)34
Correct answer is option 'A'. Can you explain this answer?
In a linear sequence where the term-to-term rule is to subtract 4, what would be the sixth term if the sequence starts at 30?
a)
10
b)
22
c)
18
d)
34
 | Torcia Education answered |
If the sequence starts at 30 and the rule is to subtract 4, the sixth term is calculated as follows: 30, 26, 22, 18, 14, and finally 10. Thus, the sixth term is 10. Understanding sequences and their rules is essential for recognizing patterns in mathematics.
In the sequence 30, 26, 22, 18, what is the term-to-term rule?- a)Subtract 4
- b)Add 4
- c)Multiply by 4
- d)Divide by 4
Correct answer is option 'A'. Can you explain this answer?
In the sequence 30, 26, 22, 18, what is the term-to-term rule?
a)
Subtract 4
b)
Add 4
c)
Multiply by 4
d)
Divide by 4
| | Yashina Kapoor answered |
The term-to-term rule for the sequence 30, 26, 22, 18 involves subtracting 4 from each term to arrive at the next term. This consistent difference indicates it is a linear sequence, where each term decreases by the same amount, which is an important concept in understanding patterns and sequences in mathematics.
What does the term "hundredths" refer to in decimal notation?- a)One part of a thousand
- b)One part of a hundred
- c)One part of a million
- d)One part of ten
Correct answer is option 'B'. Can you explain this answer?
What does the term "hundredths" refer to in decimal notation?
a)
One part of a thousand
b)
One part of a hundred
c)
One part of a million
d)
One part of ten
 | Tutorpedia Coaching answered |
The term "hundredths" refers to one part of a hundred in decimal notation, represented as 0.01. For example, 0.25 consists of 25 hundredths. This concept is vital for understanding how decimals relate to fractions and percentages, reinforcing the idea of parts of a whole in mathematics.
Which two numbers illustrate the concept of regrouping in decimals?- a)2.5 = 2 + 0.5
- b)4.1 = 4
- c)5.38 = 5 + 0.38
- d)15.35 = 10 ones + 5 ones
Correct answer is option 'D'. Can you explain this answer?
Which two numbers illustrate the concept of regrouping in decimals?
a)
2.5 = 2 + 0.5
b)
4.1 = 4
c)
5.38 = 5 + 0.38
d)
15.35 = 10 ones + 5 ones
| | Vp Classes answered |
The example 15.35 can be regrouped as 10 ones + 5 ones + 3 tenths + 5 hundredths. This demonstrates how regrouping allows for different representations of the same value, making it easier to perform calculations and understand the composition of numbers.
Which of the following represents the place value of the digit 6 in the number 234,045?- a)Six hundred
- b)Six thousand
- c)Six
- d)Sixty
Correct answer is option 'A'. Can you explain this answer?
Which of the following represents the place value of the digit 6 in the number 234,045?
a)
Six hundred
b)
Six thousand
c)
Six
d)
Sixty
| | Tutorpedia Coaching answered |
In the number 234,045, the digit 6 is in the hundred-thousands place, representing six hundred. Understanding place value is crucial in mathematics as it helps in accurately interpreting and manipulating numbers, ensuring correct calculations.
What happens to a decimal number when it is multiplied by 10?- a)The number doubles
- b)The number remains the same
- c)The digits shift one place to the left
- d)The digits shift one place to the right
Correct answer is option 'C'. Can you explain this answer?
What happens to a decimal number when it is multiplied by 10?
a)
The number doubles
b)
The number remains the same
c)
The digits shift one place to the left
d)
The digits shift one place to the right
| | Yashina Kapoor answered |
When a decimal number is multiplied by 10, the digits shift one place to the left. For example, multiplying 5.3 by 10 results in 53. This shift effectively increases the value of the number tenfold, making it crucial in both arithmetic calculations and understanding place value.
What is the rule for rounding a decimal number if the tenths digit is 5 or greater?- a)Round down to the previous whole number
- b)Leave the number unchanged
- c)Round to the nearest tenth
- d)Round up to the next whole number
Correct answer is option 'D'. Can you explain this answer?
What is the rule for rounding a decimal number if the tenths digit is 5 or greater?
a)
Round down to the previous whole number
b)
Leave the number unchanged
c)
Round to the nearest tenth
d)
Round up to the next whole number
 | Stoneridge Institute answered |
If the tenths digit of a decimal number is 5 or greater, the rule is to round up to the next whole number. For instance, the number 4.8 rounds to 5, and 23.5 rounds to 24. This rounding rule helps in estimating values and is widely used in everyday calculations.
What happens to a decimal number when it is multiplied by 10?- a)The decimal point moves one place to the left
- b)The number doubles
- c)The decimal point moves one place to the right
- d)The number remains the same
Correct answer is option 'C'. Can you explain this answer?
What happens to a decimal number when it is multiplied by 10?
a)
The decimal point moves one place to the left
b)
The number doubles
c)
The decimal point moves one place to the right
d)
The number remains the same
| | Stoneridge Institute answered |
When a decimal number is multiplied by 10, the decimal point shifts one place to the right. For example, multiplying 5.3 by 10 gives 53. This shifting indicates that the overall value of the number increases by a factor of ten, which is a fundamental concept in understanding decimal multiplication.
When you divide a decimal number by 100, what happens to the digits?- a)The decimal point moves left
- b)They shift two places to the right
- c)The number increases
- d)They shift two places to the left
Correct answer is option 'B'. Can you explain this answer?
When you divide a decimal number by 100, what happens to the digits?
a)
The decimal point moves left
b)
They shift two places to the right
c)
The number increases
d)
They shift two places to the left
| | Stoneridge Institute answered |
Dividing a decimal number by 100 shifts the digits two places to the right. For example, dividing 48 by 100 results in 0.48. This operation illustrates how the decimal point moves, effectively reducing the number's value by a factor of 100, which is essential in calculations involving percentages and smaller units.
Which of the following represents the proper rule for rounding the number 4.8 to the nearest whole number?- a)Round to 4.5
- b)Leave it as 4.8
- c)Round down to 4
- d)Round up to 5
Correct answer is option 'D'. Can you explain this answer?
Which of the following represents the proper rule for rounding the number 4.8 to the nearest whole number?
a)
Round to 4.5
b)
Leave it as 4.8
c)
Round down to 4
d)
Round up to 5
| | Tutorpedia Coaching answered |
The rule for rounding states that if the tenths digit is 5 or greater, you round up to the next whole number. Since 4.8 has an 8 in the tenths place, it rounds up to 5. This rounding rule is crucial for estimating values and simplifying calculations in mathematics.
How would you read the decimal number 90.48 aloud?- a)Ninety point four eight
- b)Ninety point four
- c)Nineteen point four eight
- d)Ninety-four point eight
Correct answer is option 'A'. Can you explain this answer?
How would you read the decimal number 90.48 aloud?
a)
Ninety point four eight
b)
Ninety point four
c)
Nineteen point four eight
d)
Ninety-four point eight
| | Stoneridge Institute answered |
The correct way to read the decimal number 90.48 is "Ninety point four eight." In reading decimals, the whole number part is stated first, followed by the word "point," and then each digit in the fractional part is read separately.
What is the fractional part of the decimal number 1.25?- a)2 tenths and 5 hundredths
- b)5 tenths
- c)1 whole
- d)1 tenth
Correct answer is option 'A'. Can you explain this answer?
What is the fractional part of the decimal number 1.25?
a)
2 tenths and 5 hundredths
b)
5 tenths
c)
1 whole
d)
1 tenth
| | Tutorpedia Coaching answered |
The decimal number 1.25 consists of a whole number part and a fractional part. In this case, the whole number part is 1, and the fractional part is made up of 2 tenths (0.2) and 5 hundredths (0.05). Therefore, the correct answer is that the fractional part of 1.25 includes 2 tenths and 5 hundredths.
What is the fractional part of the decimal number 1.25?- a)2 tenths and 5 hundredths
- b)0.25
- c)5 tenths
- d)1 one
Correct answer is option 'A'. Can you explain this answer?
What is the fractional part of the decimal number 1.25?
a)
2 tenths and 5 hundredths
b)
0.25
c)
5 tenths
d)
1 one
 | Edgy Education answered |
The decimal number 1.25 consists of a whole number part, which is 1 (one), and a fractional part, which includes 2 tenths and 5 hundredths. This means that 1.25 is made up of 1 whole, 0.2 (representing 2 tenths), and 0.05 (representing 5 hundredths), confirming that the fractional part is indeed 2 tenths and 5 hundredths.
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