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Abacus · Ages 5+ · Set A
Tens with tens, ones with ones
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A
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Date
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Goal: 15 min
Score/ 11
Remember: Ones join ones and tens join tens. Add one row at a time.

Listen and answer

A grown-up reads the story aloud first.

Pip addsPip adds on the frame. 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. Ones join ones, and tens join tens.
1
Which row do loose beads go on?
👆Top row👇Bottom row
2
Where does a bag of ten go?
👆Top row👇Bottom row
3
Ones join tens.
TrueFalse

Add on the frame

4
What number is on the frame?
32235
5
Add 24 and 3. Which frame is the answer?
🦆
A🐸
B🐟
C
6
32 + 15 =
7
41 + 28 makes 69.
TrueFalse
8
Join each sum to its answer.
  1. 111 + 12
  2. 220 + 15
  3. 332 + 6
  • A23
  • B35
  • C38

Think and do

9
Ben has 14 beads. He adds 5 more. How many?
641519
10
The tens row moves when we add loose ones.
TrueFalse
11
Number the steps to add 32 and 15.
  • Read the answer: 47
  • Show 32 on the frame
  • Add the ones: 5 more
  • Add the tens: 1 more
12
Draw the beads for 21 on the frame.
13
Copy it. tens with tens
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Answer key · Set A
Tens with tens, ones with ones
1Bottom row Loose beads are ones, and ones go on the bottom row.
2Top row A bag of ten is a ten, so it goes on the tens row at the top.
3False Ones join ones, and tens join tens.
423 Two beads on the tens row and three on the ones row make twenty-three.
5B Add the three to the ones row: 4 and 3 more make 7 ones. The tens row stays at 2. That is 27.
647 Ones: 2 and 5 make 7. Tens: 3 and 1 make 4. So 47.
7True Ones: 1 and 8 make 9. Tens: 4 and 2 make 6. So 69.
81-A, 2-B, 3-C Add the ones to the ones and the tens to the tens: 23, 35 and 38.
919 Only the ones row moves: 4 and 5 make 9 ones. The tens row stays at 1. That is 19.
10False Loose beads are ones, so only the ones row moves.
114, 1, 2, 3 Add the ones, then the tens, then read the two rows.
Mark each answer, count the right ones and write the score on the sheet.