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
1dm = …cm ….cm = 1m
1m = ….cm ….dm = 1m
Using newly learned knowledge: 1m = 10dm; 1m = 100cm and then fill in the blank with the appropriate number.
1dm = 10cm 100cm = 1m
1m = 100cm 10dm = 1m
17m + 6m = 15m – 6m =
8m + 30m = 38m – 24m =
47m + 18m = 74m – 59m =
Perform calculations with the numbers and then add the units of measure to the result you just found.
17m + 6m = 23m 15m – 6m = 9m
8m + 30m = 38m 38m – 24m = 14m
47m + 18m = 65m 74m – 59m = 15m
The coconut tree is 8m high, the pine tree is 5m taller than the coconut tree. How many meters tall is the pine tree?
To find the solution we take the height of the coconut tree plus 5m.
The number of meters high pine tree is:
8 + 5 = 13 (m)
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….
Use the appropriate units to fill in the blanks.
Attention: 1m = 100cm.
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.