Question

10 +36 = 54 10 = 540 2/4=13 = 1300 up, e.g. 2.51 ALGEBRA BASIC CONCEPTS SHORTCUT 77 Rounding Up or Down 1. If the succeeding digit is 1,2,3,4; round down, e.g. 2.3 → 2. 2. If the succeeding digit is 6,7,8,9; round up, e.g. 5.8 → 6. 3. If the succeeding digit is 5 and it has a non-zero succeeding digit after 5, TOUTID 3. 4. If the succeeding digit is 5, and it has no non-zero succeeding digit after 5, and the digit preceding 5 is even: round down, e.g. 2.5 2. 3. 11 e succeeding digit is 5, and it has no non-zero succeeding digit after 5, and the digit preceding 5 is odd; round up, e.g. 3.50 -4. SHORTCUT 78 Scientific Notation Coefficient must be between 1 to 10, including 1 but excluding 10. Moving the decimal point to the left increases the exponent of 10. Moving the decimal point to the right decreases the exponent of 10. *36000 = 3.6 x 10 Ex: What is the scientific notation for 299792458? + 6 = 31 62 = 36 = 3136

my Question 1:Can someone explain why 2.5 became 2?

my Question 2: if you have answered question 1,

Shouldnt if its 5 or more you're gonna round up no matter if its even or odd or its really a rule in math?

my Question 3: What about in significant figures? Does that rule apply that you have to round down if digit before is even? Even if the next number was 5 or more @samplestring

Answer 1

Question 1

has no Question - 1 H) It the succeding digit is 5, and it non-zero succeding digit after 5, and the preceding 5 is even then always round down Example: 2.325 > 2.32 round down I because preceding number of 5 is even) Alaways try to preceding number of 5 making even no. Thats why when preceding number of 5 is even then we try to round down the number when preceding number of 5 ig Odd then we try to preceding odd number make even number. Thats why? In 2.5 the preceding number of 5 13 so we round down. 2.5 2 Round down even

Question 2 The statement is not true. Because Question 1 statement is true, If its 5 then chech number preceding even or Odd. To preceding number even then Round down Example: 2.565 2.56 Round down It preceding number Odd then Round up. Example: 3.735 3.74 3. 13.74) L Odd Round Up If the number more than 5 than no mater preceding number even or Odd. Always Round up. 4.62 4.63 Round up 1 even 4.68 Round up 4.678 I Odd

question 2

Question 3

Question 3 Bingni bicant figures means atter pound of the total number of digit in bigure 2.335 2.34 Round up (It is called 3 significant figure because here after round of there are 3 digit in the number) If Yes, that rule apply you have to round down it digit bebore is even. Example 2.45 2.4 Round down ( It called 2 Signilicant bigure) yes, that rule apply even if the next number was 5 or more, Example → 2.76 > 2.77 Round up ( It called 3 signilicant bigure).