Page 81 - Start Up Mathematics_1

Tens Ones H T O
TEN is one with zero 1 0

ten 1 ten + 0 ones

1 bead in rod T shows
1 ten or 10.
H T O

Tens Ones
Eleven is one with one 1 1

eleven 1 ten + 1 one

1 bead in rod T shows
1 ten and 1 bead in
rod O shows 1 one.
H T O

Tens Ones
Twelve is one with two 1 2

twelve 1 ten + 2 ones

1 bead in rod T shows

1 ten and 2 beads in
rod O show 2 ones.

H T O

Tens Ones
Thirteen is one with three 1 3

thirteen 1 ten + 3 ones

1 bead in rod T shows

1 ten and 3 beads in
rod O show 3 ones.

73