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More Singapore Math Lessons

Number Bond Games

### Subtracting Ones

**Singapore Math subtraction using number bonds**

Example:

Subtract a One-Digit Number from a Two-Digit Number - Subtraction using number bonds

19 − 6 = ?

13 − 2 = ?

17 − 7 = ?

14 − 3 = ?**Examples of subtraction using number bonds**

17 − 3 = ?

12 − 4 = ?

16 − 8 = ?

14 − 6 = ?

18 − 9 = ?

13 − 5 = ?**Singapore Math subtraction using number bonds (word problems)**

Examples:

1) Jane has 17 gel pens. She gave away 4 gel pens to her friend. How many gel pens is Jane left with?

2) Joyce has 18 toy cars. She gave away 5 of them. How many does Joyce have left?

### Subtracting Tens

### Subtracting Tens and Ones

Step 1: Use Number bond to split. 74 = 60 + 14, 28 = 20 + 8

Step 2: Subtract the tens. 60 − 20 = 40

Step 3: Subtract the ones. 14 − 8 = 6

Step 4: 40 + 6 = 46

Step 4: 72 − 28 = 46

**Subtraction with Number Bonds and the Arrow Way**

Example:

56 - 30**Singapore Math Grade 1A Subtraction**

How to subtract a single digit number from a two digit number that has a number in the ones place smaller then the value being subtracted

Example:

11 − 3 = ?

More Singapore Math Lessons

Number Bond Games

Videos, worksheets, solutions and activities to help students learn subtraction using number bonds in Singapore Math.

In this lesson, we will learn

- subtracting ones using number bonds
- subtracting tens using number bonds
- subtracting tens and ones using number bonds.

For example, 17 − 3 = ?

Step 1: Use Number bond to split. 17 = 10 + 7

Step 2: Subtract the ones. 7 − 3 = 4

Step 3: 10 + 4 = 14

Step 4: 17 − 3 = 14

For example, 12 − 7 = ?

Step 1: Use Number bond to split. 12 = 10 + 2

Step 2: Subtract the ones. 10 − 7 = 3

Step 3: 2 + 3 = 5

Step 4: 12 − 7 = 5

For example, 69 − 2 = ?

Step 1: Use Number bond to split. 69 = 60 + 9

Step 2: Subtract the ones. 9 − 2 = 7

Step 3: 60 + 7 = 67

Step 4: 69 − 2 = 67

For example, 72 − 8 = ?

Step 1: Use Number bond to split. 72 = 60 + 12

Step 2: 12 − 8 = 4

Step 3: 60 + 4 = 64

Step 4: 72 − 8 = 64

Example:

Subtract a One-Digit Number from a Two-Digit Number - Subtraction using number bonds

19 − 6 = ?

13 − 2 = ?

17 − 7 = ?

14 − 3 = ?

17 − 3 = ?

12 − 4 = ?

16 − 8 = ?

14 − 6 = ?

18 − 9 = ?

13 − 5 = ?

Examples:

1) Jane has 17 gel pens. She gave away 4 gel pens to her friend. How many gel pens is Jane left with?

2) Joyce has 18 toy cars. She gave away 5 of them. How many does Joyce have left?

For example, 95 − 40 = ?

Step 1: Use Number bond to split. 95 = 90 + 5

Step 2: 90 − 40 = 50

Step 3: 50 + 5 = 55

Step 4: 95 − 40 = 55

For example, 78 − 24 = ?

Step 1: Use Number bond to split. 78 = 70 + 8, 24 = 20 + 4

Step 2: Subtract the tens. 70 − 20 = 50

Step 3: Subtract the ones. 8 − 4 = 4

Step 4: 50 + 4 = 54

Step 4: 78
− 24 = 54

Step 1: Use Number bond to split. 74 = 60 + 14, 28 = 20 + 8

Step 2: Subtract the tens. 60 − 20 = 40

Step 3: Subtract the ones. 14 − 8 = 6

Step 4: 40 + 6 = 46

Step 4: 72 − 28 = 46

Example:

56 - 30

How to subtract a single digit number from a two digit number that has a number in the ones place smaller then the value being subtracted

Example:

11 − 3 = ?

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