Grades 3-5 Math

 

3rd Grade through 5th Grade (under development)

Math

Number Sense

Four-digit Numbers

Place value
Read, write, and compare 4-digit numbers
Order numbers - least to greatest and greatest to least

Place Value Worksheets 3rd Grade

Ordering 4 digit numbers worksheets 3rd grade

3rd Grade Math Worksheets

3rd Grade Addition and Subtraction Word Problems

Multiplication/Division

😀	😀	😀	3X2=6 2X3=6	6/2=3 6/3=2
😀	😀	😀

1. Learn 1’s, 2’s, 3’s…..12’s

2. Then try to memorize it with the corresponding multiplication factor.

1	2	3	4	5	6	7	8	9	10	11	12
2	4	6	8	10	12	14	16	18	20	22	24
3	6	9	12	15	18	21	24	27	30	33	36
4	8	12	16	20	24	28	32	36	40	44	48
5	10	15	20	25	30	35	40	45	50	55	60
6	12	18	24	30	36	42	48	54	60	66	72
7	14	21	28	35	42	49	56	63	70	77	84
8	16	24	32	40	48	56	64	72	80	88	96
9	18	27	36	45	54	63	72	81	90	99	108
10	20	30	40	50	60	70	80	90	100	110	120
11	22	33	44	55	66	77	88	99	110	121	132
12	24	36	48	60	72	84	96	108	120	132	144

Let's say 5X7 =

1    2    3    4    5    6    7    8    9    10

Touch over each number and count by 5s. Stop at 7. So, you get 35.

1    2    3    4    5    6    7    8    9    10

3X6 =

5X4 =

7X8 =

9X8 =

3X2 =

2X9 =

1X7 =

0X4 =

10X8 =

8X8 =

Fractions

• numerator/denominator = 3/5 = proper fraction
• numerator/denominator = 8/7 = improper fraction
• Whole number and numerator/denominator = 9 and 7/8 [9 7/8] = mixed fraction
• Unit fraction =1/6 (numerator is always 1)

mixed fraction can be converted to improper fraction and vice versa = 9 7/8 = [(9X8) + 7]/8=79/8 = 9 7/8

To add or subtract fractions the denominator has to be the same number.

4/5+1/5=5/5=1

For fraction with different denominators, we need to find Lowest Common Factor (LCM) to find the sum and difference of fractions.

Let's say, for example:

3/5+2/3= (3/5) X (3/3) + (2/3) X (5/5) = 9/15+10/15 = 19/15

Here, LCM = 3X5 = 15