Does it take longer to ad 7+7+7 than to say “Seven times three is twenty-one” and “three times seven is twenty-one”?
if you have to memorize 3x7 and 7x3 separately, you’re doing it wrong
Really? Which one is in the standard form? How long does it take to convert the other into standard form, as opposed to doing the multiplication?
Current theme: default
Less Wrong (text)
Less Wrong (link)
Arrow keys: Next/previous image
Escape or click: Hide zoomed image
Space bar: Reset image size & position
Scroll to zoom in/out
(When zoomed in, drag to pan; double-click to close)
Keys shown in yellow (e.g., ]) are accesskeys, and require a browser-specific modifier key (or keys).
]
Keys shown in grey (e.g., ?) do not require any modifier keys.
?
Esc
h
f
a
m
v
c
r
q
t
u
o
,
.
/
s
n
e
;
Enter
[
\
k
i
l
=
-
0
′
1
2
3
4
5
6
7
8
9
→
↓
←
↑
Space
x
z
`
g
Does it take longer to ad 7+7+7 than to say “Seven times three is twenty-one” and “three times seven is twenty-one”?
if you have to memorize 3x7 and 7x3 separately, you’re doing it wrong
Really? Which one is in the standard form? How long does it take to convert the other into standard form, as opposed to doing the multiplication?