Sally add 9 to 27. explain how she can use the make 10 strategy to solve the problem.
2 answers:
Answer:
If we add two numbers or more than two numbers then make ten strategy is a basic strategy to learn addition .
In this strategy we break the smaller number in terms to make the larger number equals to ten or tens .
For example :-
Now, the given addition problem is
Here we break 9 to make 27 equals to 30 or 3 tens.
We can write,
Such that
hence,
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Answer:
Thus, area of triangle is
Step-by-step explanation:
Area if triangle is given by 1/2( base*height)
Given
Height = 15 units
also one angle is given as 30 degrees
we know Tan of any angle is ratio of perpendicular and base
lets calculate tan 30 in the given triangle
we will take the smaller triangle containing angle 30 degrees and right angle
perpendicular will be half of base of triangle
base will be side with length 15 units
tan30 = perpendicular/15
Thus, half of base of full triangle is
so full base will be
Full full triangle
height = 15 units
base =
Thus, area of triangle is