1.
36×2÷4=?
18
Bodmas.Order of operations.Left to right.
11-1×5=?
6
Bodmas.Order of operations × before -.
12(8-5)=?
36
Bodmas.Brackets come before anything else does.
0
What is the largest prime number before 100?
97
89×2+232=?
410
Bodmas.Order of operations × before +
14×11-3=?
151
Bodmas.Orders of operation.× before -.
83-4×5=?
63
Bodmas.Orders of operation.× before -.
What is the HCF of 78 and 150?
6
/What is the HCF of 1168 and 1095?
73
Find the sum of all numbers from 1 to 200.
20100. 200÷2=100
200+1 201×100=20100
199+2
198+3
etc....
49
Pattern recognition.
1×1=1 4×4=16 7×7=49.
2×2=4 5×5=25
3×3=9 6×6=36
A pattern goes 1,-1.5,2.25,-3.375.
What comes next?
5.0625
Pattern recognition.
1×(-1.5)=-1.5 (-3.375)×(-1.5)=5.0625
(-1.5)×(-1.5)=2.25
2.25×(-1.5)=-3.375
720
How many cubes of sides 1n can be fit in a box of dimensions 17n x 12n x 6.5n?
1224
A car leaves Town A for Town B,which are 550km apart, at an average speed of 72km/h.At the same time, a truck leaves Town B for Town A at a speed of 38km/h.Find the time taken for the two vehicles to meet.
5 hours.
72km+38km+110km.
550km÷110km=5.
Given that x:y=3:4 and y:z =5:8,find the value of (2y)/(3x-y+2z)
x:y y:z
3:4 5:8
x:y:z
15:20:32
45-20=64=89 Ans:40/89
The length of a rectangle is increased by 10% while its breath is decreased by 10%.Determine,if any, the percentage change in its area.
1%.
What is the LCM of 45 and 146?
Leave your answer in index notation.
2x3²x5x73.
(6570).
What is the LCM of 146 and 63?
Leave your answer in index notation.
2x3²x7x73.
(9198).
How many prime numbers are there from 1-100
25
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
Simplify
7x/3 - (2x-y)/2=?
(8x+3y)/6
Making denominators the same.
Prove 0.9999....repeating = 1
Let x be 0.9999...repeating
10x=9.9999....repeating
10x=9+0.9999....repeating10x=9+x
9x=9
x=1
What is the 17th Prime Number?
59
How many Prime Numbers are there from 100-200?
21