This sheet presumes making number into 10 helps make adding easier
2. 8 + 5 =
10 + 3 = 13 we get 3 by taking 2 from 5 and giving it to the 8 to get 10
3. 8 + 6 =
10 + 4 = 14 take 2 from 6 to give to 8 to make 10
I suspect the purpose of this is to promote mental math
Answer:
D) 16
Step-by-step explanation:
A 243x^5-1
B x^2-1
C <span><span>−<span>x5</span></span>+3</span><span>x<span>5
D 12x^7-1</span></span>
Answer:
540
Step-by-step explanation:
(n-2)×180
(5-2)×180
3×180
540
Answer: 30 deg
Step-by-step explanation:
This is an example of a 30-60-90 triangle because the proportions of the sides are 1-2-sqrt(3). Therefore m<X = 30 degrees.
