+0

# If there is seven thousand earthquakes in christchurch and 7/10ths are below a magnitude 6 then how many are above a magnitude 6

0
192
2

$$\mathrm{\ }$$If there is seven thousand earthquakes in christchurch and 7/10ths are below a magnitude 6 then how many are above a magnitude 6

Guest Mar 1, 2015

#2
+91451
+5

another way to do it is

$${\frac{{\mathtt{3}}}{{\mathtt{10}}}}{\mathtt{\,\times\,}}{\mathtt{7\,000}} = {\mathtt{2\,100}}$$

Can you see why ?

Melody  Mar 1, 2015
Sort:

#1
+5

$${\frac{{\mathtt{7}}}{{\mathtt{10}}}}{\mathtt{\,\times\,}}{\mathtt{7\,000}} = {\mathtt{4\,900}}$$, 1) This is the first step: to find 7/10ths of 7000

$${\mathtt{7\,000}}{\mathtt{\,-\,}}{\mathtt{4\,900}} = {\mathtt{2\,100}}$$    , 2) Then Subract

Guest Mar 1, 2015
#2
+91451
+5

another way to do it is

$${\frac{{\mathtt{3}}}{{\mathtt{10}}}}{\mathtt{\,\times\,}}{\mathtt{7\,000}} = {\mathtt{2\,100}}$$

Can you see why ?