Let’s solve this step by step.
We are given base-10 blocks and need to find the number they represent.
First, remember what each block means:
- 1 small cube = 1
- 1 long (rod) = 10
- 1 flat (square) = 100
- 1 big cube = 1000
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First Problem:
Look at the first group of blocks:
- Big cubes (1000s): There are 4 → 4 × 1000 =
4000
- Flats (100s): There are 3 → 3 × 100 =
300
- Longs (10s): There are 2 → 2 × 10 =
20
- Small cubes (1s): Let’s count them — there are 9 → 9 × 1 =
9
Now add them up:
4000 + 300 = 4300
4300 + 20 = 4320
4320 + 9 =
4329
So the number is
4329
Looking at the choices: 3428, 4327, 4329, 439 → Correct one is
4329
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Second Problem:
Now look at the second group:
- Big cubes (1000s): Count them — there are 8 → 8 × 1000 =
8000
- Flats (100s): There are 5 → 5 × 100 =
500
- Longs (10s): None → 0
- Small cubes (1s): Only 1 → 1 × 1 =
1
Add them:
8000 + 500 = 8500
8500 + 0 = 8500
8500 + 1 =
8501
Choices: 851, 8501, 8500, 8001 → Correct one is
8501
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Final Answer:
4329
8501
Parent Tip: Review the logic above to help your child master the concept of place value worksheet to ten thousands.