Indices
43
64
(2.7 x 103) + (1.2 x 103)
3.9 x 105
√25
±5
Simplify √50
5√2
Write 400 as a product of its prime factors
24 x 52
811/2
9
(1.2 x 103) x (8 x 102)
9.6 x 105
3√64
4
Simplify √72
6√2
Find the highest common factor of 140 and 252
22 x 7 = 28
612 ÷ 64
68
(2.07 x 104) - (1.23 x 103)
1.947 x 104
4√81
±3
Simplify √216
6√6
What is the lowest common multiple of 15 and 24
120
(33)2
36
(9.3 x 105) ÷ (2.1 x 102)
3 x 103
3√125
5
Expand and simplify √2(√2 + √8)
6
Hot dogs are sold in packs of 9, and buns are sold in packs of 6.
What is the least number of each pack that is needed to have the same number of hot dogs and buns?
2 packs of hot dogs - 18 dogs
3 packs of buns - 18 buns
(28)2 ÷ (23)2
210
Order the following:
46.5 x 10-3, 4.65 x 103, 0.00465, 465 x 102
0.00465, 46.5 x 10-3, 4.65 x 103, 465 x 102
5√7776
6
Expand and simplify (√3 + √5)2
8 + 2√15
A red light flashes every 5 seconds, a yellow light flashes every 8 seconds, and a blue light flashes every 12 seconds. If all three lights flash at the same time, after how many seconds will they next flash together?
120 seconds