Saturday, August 29, 2020
PREFIXES & SUFFIXES
Friday, August 28, 2020
NUMBERS/EXPANDED FORM
How do I write numbers in the different number system?
Read, write and use numbers, using the principle of place value, in the Hindu-Arabic system of numeration.
CONTENT SUMMARY:
We can also write decimals using standard notation.
For example, if our number were 236.82, expanded form and notation would look like this:
200 + 30 + 6 + 0.8 + 0.02 = 236.82
(2 x 100) + (3 x 10) + (6 x 1) + (8 x 1/10) + (2 x 1/100) = 236.82
ENGAGE
1. 1. Write standard numerals for the following:
(a) 40,000 + 9000 + 200 + 60 + 7 = (b) 1,000,000 + 600 + 40 + 2 =
2. 2. Write the following whole numbers in expanded form:
(a) 5,768,965 (b) 786, 944 (c) 32,564, 345
3. 3. Write the highest and smallest number from the following: [78946]
4. 4. What is the highest number that can be formed from 81942, using 9 in the tens place and 4 in the thousands place?
5. What number is represented on the chart below?
(A) 2815.17 (B) 2725.17 (C) 2626.17 (D) 2617.17
Thursday, August 27, 2020
NUMBERS / PLACE, FACE, TRUE VALUE
How do I write numbers in the different number system?
Read, write and use numbers, using the principle of place value, in the Hindu-Arabic system of numeration.
Each place on the place value chart represents a power of ten. As we move left of the decimal place, the numbers increase in value. The opposite happens when we move right of the decimal point. All digit to the left of the decimal point are whole numbers. Digits to the right of the decimal point are fractional numbers. Every digit has three values: the place, the face and the actual or true value. The place times the place gives the actual value.
1. (1) Find the difference between the values of the digits underlined.
(a) 567964 (b) 127819
2. (2) Write the following numbers in worded form using place value chart as a guide.
(a) 600606 (a)7487356
3. (3) Robert and Shawn were asked to write the value of each 6 in the number 6666 below. They gave their answers as follow.
6 6 6 6 ⇩ ⇩ ⇩ ⇩ 6000 600 60 6
ROBERT |
6 6 6 6 ⇩ ⇩ ⇩ ⇩ 600 60 6 1
SHAWN |
(a) Which of the boys’ response is correct?
(b) Justify your answer.___________________________________________________________
4. (4) Consider the number 1593. Which digit has the greatest value? Give reason for your answer.
5. (5) Place the numbers in the table below in ascending order
25496 |
7654 |
1987526 |
340724 |
90063 |
1. 6. Tick true or false for the statements below.
STATEMENTS |
TRUE |
FALSE |
Each place on the place value chart is 10 times larger than the other. |
|
|
The value of each digit in a number depends on its position in the number. |
|
|
The value of numbers decrease as we move to the left of the place value chart. |
|
|
To get the value of a digit in a number, we multiply the digit by the place it holds on the place value chart. |
|
|
Read given scenario from the chalkboard which will lead to discussion.
Paula was asked to find the sum of 4675 and 291. She set out the problem as follows: 4 6 7 5 + 2 9 1 _________ Do you believe Paula will arrive at the correct answer? Yes/No Give reason/s to justify your answer.
|