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Horace Hill
Wiki User
∙ 12y agoAdding twenty is like adding ten twice.
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What is the answer to 25 plus -5?
20
Why are there no roman numerals for zero?
Because their system is based on adding numbers ob so a zero is not nessaCary it is like instead of 5+10+20+5+60=100 you write 5+0+10+0+20+0+5+0+60=100
What is the rule for adding a positive and negative number?
Adding a positive and negative number, the sum will always be negative. Example: 10+-20=-10 If you add two negatives, they cancel each other out making it positive.
Why is adding 20 percent like multiplying 1.20?
21.2
What is counting by fives?
you keep adding 5 for example: 5 10 15 20 25 30 35 40....
What is 3 over 10 plus 1 over 20?
Before adding the fractions together, it is best to get like-denominators:3/10 + 1/20or6/20 + 1/20 = 7/20
What number is next in the sequence 10.20.30.20?
what number is next in the sequence: 10,20,30,20,(? 30
What is the answer to 25 plus -5?
20
How is skip counting like addition?
When you start skip counting it is just adding the same number over and over again..like 5+5=10+5+15+5+20....
When twenty is subtracted from zero what is the result?
0 - 20 equals -20. Like a debt that can only be cleared by adding 20
What is a pattern between 10 40 90 and 160?
You are adding 20 more each time, starting by adding 10 to zero, then 30, then 50, then 70. The next number would be got by adding 90 to 160 to give 250.
Why are there no roman numerals for zero?
Because their system is based on adding numbers ob so a zero is not nessaCary it is like instead of 5+10+20+5+60=100 you write 5+0+10+0+20+0+5+0+60=100
What is the rule for adding a positive and negative number?
Adding a positive and negative number, the sum will always be negative. Example: 10+-20=-10 If you add two negatives, they cancel each other out making it positive.
Subtract -10 from -15?
-15 - (-10)= -5. Subtracting a negative is just like adding a positive.
What are the multiples of ten?
10, 20, 30, 40, 50, 60, and so on 10, 20, 30, 40, 50 The first ten multiples of ten are 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100. 10,20,30,40,50,60,70,80,90,100,110,120,130,140,150,160,170,180,190.........................……and keep on adding 10.
What is the Math rule for 5 6 8 12 20 for math?
Add the double of the previous adding. The following numbers are 36, 68, 132... So it's like: adding 1, adding 2, adding 4, adding 8, adding 16, adding 32, adding 64
What are the multiplies of 5?
the multiplies of 5 are just in the 5 times tables like 5x5=25
