23 on the frame: two tens on top and three ones below.
The big ideaOnes go with ones. Tens go with tens. Each row adds on its own.
How it works
The frame has two rows. The top row is tens and the bottom row is ones.
Loose beads are ones, so they go on the bottom row.
A bag of ten is a ten, so it goes on the top row.
Add ones with ones, and tens with tens.
24: two tens and four ones.
🔵ones: bottom row🛍️a bag of ten: top row
Ones join ones, and tens join tens.
Example 1: 24 + 3
Show 24: two beads on the tens row and four on the ones row.
Three loose beads are ones: slide three across on the ones row.
The tens row does not move.
4 + 3 = 7, so there are 2 tens and 7 ones.
24 + 3 = 27
24 + 3 = 27
Example 2: 32 + 15
Show 32: three tens and two ones.
Add the ones first: 2 + 5 = 7.
Add the tens next: 3 + 1 = 4.
Read both rows: 4 tens and 7 ones.
32 + 15 = 47
32 + 15 = 47
Example 3: 41 + 28
Show 41: four tens and one one.
Ones: 1 + 8 = 9.
Tens: 4 + 2 = 6.
41 + 28 = 69
41 + 28 = 69
Example 4: 14 + 5
Show 14: one ten and four ones.
Five loose beads are ones, so only the ones row moves.
4 + 5 = 9, and the ten stays.
14 + 5 = 19
14 + 5 = 19
Words to know
tens row
The top row. Each bead is one ten.
ones row
The bottom row. Each bead is one.
a bag of ten
Ten beads together: one ten.
add
To put numbers together.
Watch out
Loose beads go on the ones row, never on the tens row.
A bag of ten is one bead on the tens row.
Ones join ones, and tens join tens.
Read the top row first, then the bottom row.
Try it
What is 24 + 3?
What is 32 + 15?
Which row do loose beads go on?
What is 14 + 5?
Answers: 1. 27 · 2. 47 · 3. The ones row, at the bottom · 4. 19
Try at homeAsk a grown-up for two small piles of buttons or blocks, and make groups of ten in each pile with the loose ones beside them. Then push the piles together and add the ones first, then the tens.
For grown-upsMake two small piles of buttons, group each into tens with the loose ones beside it, then join them: ones first, then tens.
Open these notes on screenScan the code, or go to tutorpip.com.