I'll solve the subtraction problems shown in the image, using the visual aids (base-10 blocks) to help explain the solutions.
Let me start by examining each problem one by one.
First problem: 39 - 14 = ?
Looking at the visual representation:
- We have 3 tens (pink rods) and 9 ones (yellow dots) representing 39
- We need to subtract 1 ten and 4 ones (representing 14)
- Removing 1 ten leaves us with 2 tens
- Removing 4 ones from 9 ones leaves us with 5 ones
- So we have 2 tens and 5 ones remaining, which equals 25
Second problem: 62 - 35 = ?
Looking at the visual representation:
- We have 6 tens (pink rods) and 2 ones (yellow dots) representing 62
- We need to subtract 3 tens and 5 ones (representing 35)
- This requires regrouping since we can't subtract 5 ones from 2 ones
- We'll need to convert 1 ten into 10 ones, giving us 5 tens and 12 ones
- Now subtract 3 tens from 5 tens, leaving 2 tens
- Subtract 5 ones from 12 ones, leaving 7 ones
- So we have 2 tens and 7 ones remaining, which equals 27
Third problem: 39 - 24 = ?
Looking at the visual representation:
- We have 3 tens (pink rods) and 9 ones (yellow dots) representing 39
- We need to subtract 2 tens and 4 ones (representing 24)
- Removing 2 tens from 3 tens leaves us with 1 ten
- Removing 4 ones from 9 ones leaves us with 5 ones
- So we have 1 ten and 5 ones remaining, which equals 15
The completed worksheet would show:
- 39 - 14 = 25
- 62 - 35 = 27
- 39 - 24 = 15
Parent Tip: Review the logic above to help your child master the concept of subtraction with base ten blocks worksheet.
