Rounding numbers
Round off
39.794
to 1 decimal place.
39.8
Express
2.8 x 103
as a basic numeral
2800
Write the number of significant figures used in the expression
"$1.2 million was spent"
2
Factorise
2a + 6 = ☐(a+3)
2(a=3)
Expand:
2(b+3)
2b+6
Round off
86.224
to 2 decimal places
86.22
Express
5.5 x 10-2
as a basic numeral
0.055
Round
2391
to 3 significant figures
2390
What is the highest common factor of 14ab and 12ab?
a) ab b) 14 c) 2ab d) a2b2
c) 2ab
Expand
6(2-𝑥)
12-6𝑥
Round off
3323.3951
to 2 decimal places
332.40
Express
3.55 x 10-2
as a basic numeral
0.0355
Round
19.2534
to 4 significant figures
19.25
Factorise fully
4m-8
4(m-2)
Expand and simplify
3(2a +8) +12
6a + 36
Round off
1.8796
to 3 decimal places
1.880
Express
6.89 x 106
as a basic numeral
6,800,000
Round
0.0093821
to 2 significant figures
0.0094
Factorise fully
8y-32a
8(y-4a)
Expand
4(7 - 5c)
28 - 20c
Round off
33.2832
to 3 decimal places
33.283
Express
3.2 x 10 -8
as a basic numeral
0.000000032
Write 388,275,000
in scientific notation to 3 significant figures
______ x 10 _
3.88 x 108
Factorise fully
7𝑥-12𝑥2
𝑥(7-12𝑥)
Expand
3(2a + 4b – c)
6a +12b – 3c