## Why parents choose Splash Math for their second graders?

#### Personalised Learning

Intelligently adapts to the way each child learns

#### Fun Rewards

Get coins for each correct answer and redeem coins for virtual pets

#### Actionable Reports

Monitor progress with iPhone app, weekly emails and detailed dashboards

4.

# Subtract 1 Digit Number from 2 Digit with Regrouping within 100

- 2nd Grade MathNow that children are familiar with subtraction of 2-digit numbers without regrouping, it is time to introduce them to the concept of regrouping. This engaging subtraction game is a fun alternative to the regular worksheets that children are used to. The game involves subtracting a 1-digit number from a 2-digit number by regrouping. Children should be able to visualize 2-digit numbers as a combination of tens and ones to be able to subtract a certain number of ones from them.

**What’s inside?**

- Decompose tens as ones to subtract a 1-digit number with regrouping.

- Work with subtraction sentences to fluently subtract numbers with regrouping.

**Real-World Application**

Subtraction is to take away or take apart - to make things less. When we end up eating a couple candies from the candy jar, we are subtracting a few from the total. Similarly, figuring out how much money is left after you spent some on ice cream requires subtraction.

**What’s next?**

Second graders can now apply their understanding of subtracting 1-digit numbers with regrouping to subtracting 2-digit numbers. Mastering this skill provides them the required technique and fluency to subtract bigger numbers.

### Common Core Alignment

**2.NBT.5**Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.