Page:LA2-NSRW-5-0159.jpg

$7+0=7\$	$8+0=8\$	$9+0=9\$	$10+0=10\$
$6+1=7\$	$7+7=8\$	$8+1=9\$	$9+1=10\$
$5+2=7\$	$6+2=8\$	$7+2=9\$	$8+2=10\$
$4+3=7\$	$5+3=8\$	$6+3=9\$	$7+3=10\$
$3+4=7\$	$4+4=8\$	$5+4=9\$	$6+4=10\$
$2+5=7\$	$3+5=8\$	$4+5=9\$	$5+5=10\$
$1+6=7\$	$2+6=8\$	$3+6=9\$	$4+6=10\$
$\$	$1+7=8\$	$2+7=9\$	$3+7=10\$
$\$	$\$	$1+8=9\$	$2+8=10\$
$\$	$\$	$\$	$1+9=10\$

Drill chart in addition where sums do not exceed 10:

${\begin{array}{lrl}\ 2\ \\{\underline {\ 1\ }}\end{array}}$	${\begin{array}{lrl}\ 5\ \\{\underline {\ 2\ }}\end{array}}$	${\begin{array}{lrl}\ 4\ \\{\underline {\ 4\ }}\end{array}}$	${\begin{array}{lrl}\ 6\ \\{\underline {\ 3\ }}\end{array}}$	${\begin{array}{lrl}\ 7\ \\{\underline {\ 3\ }}\end{array}}$
${\begin{array}{lrl}\ 6\ \\{\underline {\ 4\ }}\end{array}}$	${\begin{array}{lrl}\ 3\ \\{\underline {\ 1\ }}\end{array}}$	${\begin{array}{lrl}\ 4\ \\{\underline {\ 3\ }}\end{array}}$	${\begin{array}{lrl}\ 8\ \\{\underline {\ 2\ }}\end{array}}$	${\begin{array}{lrl}\ 6\ \\{\underline {\ 1\ }}\end{array}}$
${\begin{array}{lrl}\ 5\ \\{\underline {\ 4\ }}\end{array}}$	${\begin{array}{lrl}\ 9\ \\{\underline {\ 1\ }}\end{array}}$	${\begin{array}{lrl}\ 3\ \\{\underline {\ 2\ }}\end{array}}$	${\begin{array}{lrl}\ 5\ \\{\underline {\ 5\ }}\end{array}}$	${\begin{array}{lrl}\ 8\ \\{\underline {\ 1\ }}\end{array}}$
${\begin{array}{lrl}\ 2\ \\{\underline {\ 2\ }}\end{array}}$	${\begin{array}{lrl}\ 7\ \\{\underline {\ 2\ }}\end{array}}$	${\begin{array}{lrl}\ 4\ \\{\underline {\ 1\ }}\end{array}}$	${\begin{array}{lrl}\ 7\ \\{\underline {\ 1\ }}\end{array}}$	${\begin{array}{lrl}\ 4\ \\{\underline {\ 5\ }}\end{array}}$
${\begin{array}{lrl}\ 5\ \\{\underline {\ 1\ }}\end{array}}$	${\begin{array}{lrl}\ 4\ \\{\underline {\ 1\ }}\end{array}}$	${\begin{array}{lrl}\ 6\ \\{\underline {\ 2\ }}\end{array}}$	${\begin{array}{lrl}\ 5\ \\{\underline {\ 3\ }}\end{array}}$	${\begin{array}{lrl}\ 3\ \\{\underline {\ 3\ }}\end{array}}$

The teacher may point to any one of the combinations, requiring the pupil to answer promptly. Or the pupil may be asked to give the sums in a certain column from left to right, or from top to bottom.

Our system of numbers is a decimal system, and therefore in teaching the addition of numbers whose sum exceeds 10, as 7+5, we think that 3 added to 7 makes 10; hence

$7+5=7+3+2=12\$

$8+7=8+2+5=15\$

$6+8=6+4+4=14\$

Much practice in this work will give a pupil great power in dealing with all numbers, and it will emphasize our decimal system.