Adding twenty is like adding ten twice.
20
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
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.
21.2
you keep adding 5 for example: 5 10 15 20 25 30 35 40....
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,(? 30
20
When you start skip counting it is just adding the same number over and over again..like 5+5=10+5+15+5+20....
0 - 20 equals -20. Like a debt that can only be cleared by adding 20
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.
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
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.
-15 - (-10)= -5. Subtracting a negative is just like adding a positive.
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.
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
the multiplies of 5 are just in the 5 times tables like 5x5=25