Math 2 Lesson: Meters

### 1.1. Knowledge to remember

– The unit of measurement of the length of the meter, the symbol and the magnitude of the meter, the relationship of the meter with the units dm, cm.

– Addition, subtraction and related word problems.

### 1.2. Math forms

**Form 1: Converting units of measurement**

I remember how to convert units: 1m = 10dm; 1m = 100cm

**Form 2: Perform addition and subtraction with units of length**

With numbers in the same unit of measure:

– Perform addition or subtraction of numbers

– Keep the unit of measurement in the result.

**Form 3: Math Quiz**

– Read and analyze the topic.

– Find a solution to the problem.

– Present the solution.

– Check the solution and the results of the problem.

### 1.3. Solving Textbook Exercises

**Lesson 1**

Number?

1dm = …cm ….cm = 1m

1m = ….cm ….dm = 1m

__Solution method__

Using newly learned knowledge: 1m = 10dm; 1m = 100cm and then fill in the blank with the appropriate number.

__Solution guide__

1dm = 10cm 100cm = 1m

1m = 100cm 10dm = 1m

**Lesson 2**

Calculate:

17m + 6m = 15m – 6m =

8m + 30m = 38m – 24m =

47m + 18m = 74m – 59m =

__Solution method__

Perform calculations with the numbers and then add the units of measure to the result you just found.

__Solution guide__

17m + 6m = 23m 15m – 6m = 9m

8m + 30m = 38m 38m – 24m = 14m

47m + 18m = 65m 74m – 59m = 15m

**lesson 3**

The coconut tree is 8m high, the pine tree is 5m taller than the coconut tree. How many meters tall is the pine tree?

__Solution method__

*Summary*

**The answer**

To find the solution we take the height of the coconut tree plus 5m.

__Solution guide__

The number of meters high pine tree is:

8 + 5 = 13 (m)

Answer: 13m.

**Lesson 4**

Write cm or m in the appropriate dot:

a) The flagpole in the schoolyard is 10…

b) The pencil is 19….

c) The areca tree is 6…

d) Uncle Tu is 165 tall….

__Solution method__

Use the appropriate units to fill in the blanks.

**Attention: **1m = 100cm.

__Solution guide__

a) The flagpole in the schoolyard is 10m high.

b) The pencil is 19cm long.

c) The areca tree is 6m high.

d) Uncle Tu is 165cm tall.

.

=====

## Leave a Reply