Add within 40
$0.99/each
Add multiples of 10 within 40
1.NBT.4, 2.NBT.5
Add 2-digit #s & 1-digit #s within 40
1.NBT.4, 2.NBT.5
Add 2-digit numbers within 40
1.NBT.4, 2.NBT.5
Add without crossing the 10 within 40
1.NBT.4, 2.NBT.5
Add 2-digit #s within 40 w/o renaming
1.NBT.4, 2.NBT.5
Add within 40
1.NBT.4, 2.NBT.5
Add crossing the 10 within 40
1.NBT.4, 2.NBT.5
Add 2-digit #s within 40 with renaming
1.NBT.4, 2.NBT.5