Understanding Addition and Subtraction of Tens

The video tutorial covers counting in tens, both forwards and backwards, using a 100 square. It explains how to add and subtract 10 from numbers by focusing on the tens column in a place value grid. The tutorial provides examples to illustrate these concepts, emphasizing that the ones column remains unchanged when adding or subtracting 10.

What is the main focus of today's video?

• Learning about multiplication

• Understanding 10 more and 10 less

• Studying shapes

• Exploring fractions

What number do we start counting in tens from in the warm-up?

• 100

• 48

• 23

• 76

What is the next number in the sequence: 48, 58, 68?

• 88

• 78

• 98

• 108

If you start counting in tens from 23, what number comes after 53?

• 63

• 73

• 83

• 93

What is the first number when counting backwards in tens from 76?

• 46

• 56

• 36

• 66

When adding 10 to a number, which column do we focus on?

• Ones

• Thousands

• Hundreds

• Tens

What is 42 plus 10?

• 52

• 62

• 72

• 82

In the example, what does 65 become when you add 10?

• 75

• 85

• 105

• 95

What remains unchanged when adding 10 to a number?

• Thousands column

• Hundreds column

• Ones column

• Tens column

What is the result of adding 10 to 23?

• 63

• 33

• 43

• 53