Telling Time by Half-Hour and Quarter-Hour

K  to 12 Mathematics 

Philippine Basic  Education

Content: Measurement

Content Standards: The learner demonstrates understanding of the concepts of time and measures and compares objects using direct comparison and non-standard units of length, mass and capacity.

Performance Standards: The learner is able to give different measures of time.

Learning Competencies: The learner  tells the time by an hour, half-hour and quarter-hour.

What time do you go to bed? 

Lina goes to bed at this time: 

Can you tell what time she goes to bed at night? 

Identify the Values and Place Values of 3-digit Numbers

How do you read this number?

327

This number has 3 digits. 

Each digit has its own place that show its value. 

Let us take for example the number above. Seven is in ones place and its value is 7. 

The tens place shows groups of tens. In the number 327, 2 is in the tens place. Its value is 2 tens or 20. 

Three is in hundreds place and its value is 300. Also, the digit 3 shows there 3 groups of hundreds in the number 327.  

Can you tell the value and place of 8 in these numbers?

Grade 2 Math Challenge Parallel Questions- Write an Expanded Form of a Number into a Standard Form

Exercises.

A. Direction: Read the questions carefully and write your answers in the blanks.

1.What is 8 x 10,000 + 9 x 1,000 + 1 x 100 + 2 x 10 + 3  written in standard form ?____________

2.What is  5 x 1,000 + 7 x 100 + 3 x 10 + 7  written in standard form ?____________

3.What is 9 x 10,000 + 4 x 1,000 + 2 x 100 + 7 x 10   written in standard form ?____________

4.What is 3 x 10,000 + 7 x 1,000 + 5 x 100 + 6 x 10 + 2  written in standard form ?____________

5.What is 7 x 10,000 + 8 x 100 + 8 x 10 + 8  written in standard form ?____________

6.What is 1 x 10,000 + 9 x 1,000 + 3 x 100 + 5 x 10 + 3  written in standard form ?____________

7.What is  6x 1,000 + 5 x 100 + 3 x 10 + 4  written in standard form ?____________

8.What is 2 x 10,000 + 4 x 1,000 + 6 x 100 + 9  written in standard form ?____________

9.What is 8 x 10,000 + 3 x 1,000 + 2 x 100 + 1 x 10 + 4  written in standard form ?____________

10.What is 4 x 10,000 + 1 x 1,000 + 3 x 100 + 4 x 10 + 7  written in standard form ?____________

11.What is  7 x 1,000 + 8 x 100 + 3 x 10 + 3  written in standard form ?____________

12.What is 1 x 10,000 + 1 x 1,000  + 9 x 10 + 9  written in standard form ?____________

13.What is 5 x 10,000 + 8 x 1,000 + 3x 100 + 5 x 10 + 6  written in standard form ?____________

14.What is 9 x 10,000 + 2 x 1,000 + 2 x 100 + 3 x 10 + 8  written in standard form ?____________

15. What is  9 x 1,000 + 2 x 100 + 7 x 10 + 9  written in standard form ?____________

Grade 2 Math Challenge Parallel Questions- Can Form the Least or Largest Number Using 4 Digits

Question: What is the smallest 4-digit number that you can form with the digits 0,2,0,1?

Things to Remember:

* Zeros must be within the two digits that are equal to one or more. 

*Identify the smallest number greater than zero and write it in thousands place.

* Next, arrange the remaining numbers from least to greatest. Write the remaining numbers in hundreds, tens, and ones place respectively. 

In this set of numbers, 0,0,2,1, which is the smallest number that is more than zero? It is 1. 

     1      ___    ___   ____

  Th       H        T     O

The remaining numbers are  0, 2, 0. 

Arrange these numbers from least to greatest.  --> 0, 0, 2

Write each digit in the hundreds, tens, and ones place respectively. 

1 0 0 2

The smallest 4-digit number that you can form with the digits 0,2,0,1 is 1,002.

How about the other way around?

If the given numbers have no zeros, arrange the digits from smallest to biggest. The first digit is in the thousands’ place, the second is in hundred’s place, the third is in ten’s place, and the least digit is in the one’s place. 

7,9,1,3---> 1,3,7,9

  1         3        7      9

  Th       H        T     O

Arrange the digits from biggest to smallest. The first digit is in the thousands’ place, the second is in hundred’s place, the third is in ten’s place, and the least digit is in the one’s place. 

0,2,0,1--->  2,1,0,0

  2         1        0      0

  Th       H        T     O

The biggest 4-digit number that you can form with the digits 0,2,0,1 is 2,100.

Try these!

B. Direction: Read the questions carefully and write your answers in the blanks.

1.What is the smallest 4-digit number that you can form with the digits 0,2,0,1?___________

2.What is the smallest 4-digit number that you can form with the digits 9,6,5,7?___________

3.What is the biggest 4-digit number that you can form with the digits 5,0,8,1?___________

4.What is the smallest 4-digit number that you can form with the digits 1,2,3,2?___________

5.What is the biggest 4-digit number that you can form with the digits 4,2,6,0?___________

6.What is the smallest 4-digit number that you can form with the digits 8,8,8,8?___________

7.What is the smallest 4-digit number that you can form with the digits 5,7,2,3?___________

8.What is the biggest 4-digit number that you can form with the digits 8,4,9,1?___________

9.What is the biggest 4-digit number that you can form with the digits 3,9,5,6?___________

10.What is the smallest 4-digit number that you can form with the digits 8,9,0,0?___________

11.What is the smallest 4-digit number that you can form with the digits 0,5,0,7?___________

12.What is the smallest 4-digit number that you can form with the digits 2,1,9,3?___________

13.What is the biggest 4-digit number that you can form with the digits 5,2,3,0?___________

14.What is the biggest 4-digit number that you can form with the digits 0,0,0,1?___________

15.What is the biggest 4-digit number that you can form with the digits 3,8,1,2?___________

Grade 2 Math Challenge Parallel Questions- Identify the Value of a Digit in a Number

Question: What is the value of 7 in  979,243?

Answer: 70, 000 or 7 ten thousands

A. Direction: Read the questions carefully and write your answers in the blanks.

1.What is the value of   9 in  82,901?___________________

2.What is the value of   1 in  130,663?___________________

3.What is the value of   8 in  198,400?___________________

4.What is the value of   7 in  369,870?___________________

5.What is the value of   5 in  848,589?___________________

6.What is the value of   3 in  7,438?___________________

7.What is the value of   9 in  945,627?___________________

8.What is the value of   2 in  138,325?___________________

9.What is the value of   6 in  28,246?___________________

What is the value of   1 in  421?___________________

Grade 2 Math Challenge Parallel Questions- Identify the Place Value of a Digit in a Number

A. Direction: Read the questions carefully and write your answers in the blanks.

1.What is the place value of the underlined digit in  979,243? ___________________

2.What is the place value of the underlined digit in  455,032? ___________________

3.What is the place value of the underlined digit in  63,086? ____________________

4.What is the place value of the underlined digit in  1,887? ____________________

5.What is the place value of the underlined digit in  783,513? ____________________

6.What is the place value of the underlined digit in  143,322? ____________________

7.What is the place value of the underlined digit in  5,067? ____________________

8.What is the place value of the underlined digit in  257,592? ____________________

9.What is the place value of the underlined digit in  433,203? ____________________

10.What is the place value of the underlined digit in  108? ____________________

11.What is the place value of the underlined digit in  486,394? ____________________

12.What is the place value of the underlined digit in  36,885? ____________________

13.What is the place value of the underlined digit in  21,359? ____________________

14.What is the place value of the underlined digit in  106,376? ____________________

15.What is the place value of the underlined digit in  524,123? ____________________

Math Challenge Parallel Questions

Math is not actually difficult. It is just a matter of practicing one's Mathematical skills. Constant practice and review of Math lessons are important for a child to develop his or her ability to answer not only basic Mathematical problems but also challenging problems.

In the Philippines, Metrobank Foundation Inc, Mathematics Teachers Association of the Philippines (MTAP) , and the Department of Education (DepEd) collaborated to organize Metrobank-MTAP-DepEd Math Challenge (MMC) every year.

I was able to teach several students who are MTAP contestants when I was still teaching at a school. Simply, I was an MTAP trainer before.

I have been having this underlying thought that every Filipino child can do challenging Math problems. How? By constant practice. One of the ways to do this is to give the student a set of questions targeting one skill. For example, in identifying the place value of a digit in a number, I would give ten different questions asking the student to just identify the place value of a digit. Repetition is a mother of skill, as the famous American businessman and authoer Anthony Robbins said.

There are so many ways to train students. I wish to include my way of doing it.

In this MTAP series, questions patterned after the common Math Challenge questions are posted.