Homeschooling in the Philippines

August 11

Math Prep

Ordinal Numbers

1^st first

2^nd second

3^rd third

4^th fourth

5^th fifth

6^th sixth

7^th seventh

8^th eighth

9^th ninth

10^th tenth

Math Word problems

Here are the steps in solving Math word problems:

1. Read and understand the problem carefully.
2. Write the given information.
3. Find out what is asked.
4. Give the number sentence.
5. Solve for the answer.
6. Write the answer with the correct label.

Math Prep

Number Words 10 – 100

10 ten

20 twenty

30 thirty

40 forty

50 fifty

60 sixty

70 seventy

80 eighty

90 ninety

100 one hundred

Addition with Regrouping

• In adding numbers with regrouping, align the digits according to their place values.

• Add the ones first, the tens next, the hundreds, and then the thousands.

• Regroup to the next higher place whenever the partial sum is more than 9.

Addition without Regrouping

• In adding numbers without regrouping, write the numbers in columns, so that the ones digits are at the rightmost column, the tens digits are in the next column, the hundreds digits are the third column and the thousands digits are in the leftmost column.

• Start adding the ones digits, next the tens, then the hundreds and then the thousands digits.

July 29

Math Prep

Number Words 11 – 20

1. eleven
2. twelve
3. thirteen
4. fourteen
5. fifteen
6. sixteen
7. seventeen
8. eighteen
9. nineteen
10. twenty

Properties of Addition

• The commutative property of addition tells us that the order or position of the addends does not affect the sum.

• The associative property of addition tells that the grouping of the addends does not affect the sum.

• The identity property of addition tells us that when zero is added to a number or when a number is added to zero, the sum is the number itself.