 Shuffle Toggle OnToggle Off
 Alphabetize Toggle OnToggle Off
 Front First Toggle OnToggle Off
 Both Sides Toggle OnToggle Off
 Read Toggle OnToggle Off
Reading...
How to study your flashcards.
Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key
Up/Down arrow keys: Flip the card between the front and back.down keyup key
H key: Show hint (3rd side).h key
A key: Read text to speech.a key
Play button
Play button
21 Cards in this Set
 Front
 Back
45 squared

2025
4*5=20 two digit number ends in 5 second half 25 

75 squared

7*8 = 56
two digit number ends in 5 second half 25 5625 

95 squared

9*10=90
two digit number ends in 5 second half 25 9025 

two digit numbers ending in 5

25 is the end and then multiply the tens digit by one greater


25 squared

3*2 = 6
two digit number ends in 5 second half 25 625 

85 squared

8*9=72
two digit number ends in 5 second half 25 7225 

65 squared

7*6 = 42
two digit number ends in 5 second half 25 4225 

Squaring two digit numbers in 50's

start with 25 and add the ones digit to it.
Square the ones digit and tack on to the end of the first part. If you end up with a one digit answer put a 0 in front. Example 51 squared 25+1 = 26 1 squared = 1 so add a 0 in front and 2601 = 51 squared 

55 squared

25 add ones digit = 25+5 = 30
square ones digit = 5 squared = 25 3025 = 55 squared 

58 squared

25 + 8 = 33
8 squared is 64 3364 

52 squared

start with 25 add ones digit
25+2 = 27 square ones digit and tack on the end 2 squared = 4 add a 0 in front because it is only one digit 2704 = 52 squared 

57 squared

25+7=32
7 squared = 49 3249 

56 squared

25+6=31
6 square =36 3136 

59 squared

25+9= 34
9 square = 81 3481 

53 squared

25 + 3 = 28
3 squared = 9 add 0 in front because it is a one digit number 2809 

57 squared

25+7= 32
7 squared = 49 3249 

squaring two digit numbers in the 40's

begin with 15 add ones digit
how much less than 50 is the number you are squaring 50 minus whatever number you are squaring square that number tack this number onto the first example 46 squared = 15+6 = 21 5046 = 4 4 squared is 16 2116 = 46 squared 

41 square

15+1 = 16
5041 =9 9 squared =81 1681 = 41 squared 

47 square

15 + 7 = 22
50  47 = 3 3 squared = 9 nine is a one digit so a 0 goes in front 47 squared = 2209 

45 squared

15 + 5 = 20
50  45 = 5 5 squared = 25 45 squared 2025 

49 squared

15 + 9 = 24
50  49 = 1 1 squared = 1 since it is one digit add 0 in front 49 squared is 2401 