Two decimal places:
If r=6.8cm,
then $\pi \cdot r^2$ = ?
Two decimal places:
If r=6.8cm,
then $\pi \cdot r^2$ = ?
$145.27cm^2$
Write the number in form $a \cdot 10^k$
where $1\leq a<10$:
2100
$2.1 \cdot 10^3$
Write with 3 s.f.
0.0078388
0.00784
Write the number in form $a \cdot 10^k$
where $1\leq a<10$:
0.000408
4.08 \cdot 10^-4
Use your GDC, answer with 3 s.f
$(8.3+1.95)^3$
1080
Write the number in form $a \cdot 10^k$
where $1\leq a<10$:
0.00000257
$2.57 \cdot 10^{-6}$
Two decimal places:
If r=3.2cm and h=2.9cm,
then $\pi \cdot r^2 \cdot h$ = ?
$93.29cm^3$
Fill in the missing values of n.
$0.00282=2.82 \cdot 10^n$
n = -3
Write with 3 s.f.
93.5159
95.5
Write the number in form $a \cdot 10^k$
where $1\leq a<10$:
98400000
$9.84 \cdot 10^7$
Write out the number in decimal form
$8.38 \cdot 10^{-6}$
0.00000838
Write the number in form $a \cdot 10^k$
where $1\leq a<10$:
62100
$6.21 \cdot 10^4$
Fill in the missing values of n.
$53000=5.3 \cdot 10^n$
n = 4
Write with 3 s.f.
108.011
Write with 3 s.f.
108
Fill in the missing values of n.
$628=n.28 \cdot 10^2$
n = 6
Use your GDC, answer with 3 s.f
$\sqrt{6}+\sqrt{5}+\sqrt{4}$
6.69
Write the number in form $a \cdot 10^k$
where $1\leq a<10$:
52
$5.2 \cdot 10^1$
Write the number in form $a \cdot 10^k$
where $1\leq a<10$:
0.727
$7.27 \cdot 10^{-1}$
Write the number in form $a \cdot 10^k$
where $1\leq a<10$:
0.0319
$3.19 \cdot 10^{-2}$
Convert the units
3500mm to m
3.5m
Use your GDC, answer with 3. s.f.
$\frac{6.96 \cdot 2.15}{4.86} $
3.08
Convert the units
$4.5m^2$ to $cm^2$
$45000cm^2$
Convert the units
$685cm^2$ to $m^2$
$$0.0685m^2
Write with 3 s.f.
0.062633
0.0626
Convert the units
7900 ml to litres
7.9l
Use your GDC, answer with 3 s.f
$\sqrt{6^2+5^2+4^2}$
8.77
$24000cm^3$ to $m^3$
$0.024m^3$
Write out the number in decimal form
$9.72 \cdot 10^{-3}$
0.00972
Convert the units
3.95 litres to ml
3950ml
Write out the number in decimal form
$4.21 \cdot 10^{-2}$
0.0421
Write with 3 s.f.
8.55581
8.56
Convert the units
30g to kg
0.03kg
Two decimal places:
If r=4.2cm and h=3.95cm,
then $\frac{1}{3}\pi \cdot r^2 \cdot h$ = ?
$72.97cm^3$
Convert the units
83.3 litres to $cm^3$
$83300cm^3$
Fill in the missing values of n.
$3640000=3.n4 \cdot 10^6$
n = 6
Write out the number in decimal form
$1.25 \cdot 10^4$
125000