Review on measuring length and measuring mass

### 1.1. Solve textbook exercises on pages 152, 153

**Lesson 1 Textbook page 152**

a) Complete the following table of units of length:

Larger than meters |
Meters |
Smaller than meters |
|||||

Sign |
dam |
square meter |
dm |
||||

Relationships between adjacent units of measurement |
1m = 10dm = 0.1dam |

b) Complete the following table of units of mass measurement:

Greater than kilogramki |
Kg |
Less than a kilogram |
|||||

Sign |
ton |
weights |
oats |
kg |
hg |
dag |
g |

Relationships between adjacent units of measurement |
1kg = 10hg = 0.1 oats |

c) In the table of units of length (or table of units of measurement of mass):

– How many times larger is the next smaller unit?

– The smaller unit is one-half of the next larger unit?

*Solution guide:*

a)

Larger than meters |
Meters |
Smaller than meters |
|||||

Sign |
kilometer |
hm |
dam |
square meter |
dm |
cm |
mm |

Relationships between adjacent units of measurement |
1km = 10hm |
1hm = 10dam = 0.1km |
1dam = 10m = 0.1hm |
1m = 10dm = 0.1dam |
1dm = 10cm = 0.1m |
1cm = 10mm = 0.1dm |
1mm = 0.1cm |

b)

Greater than kilogramki |
Kg |
Less than a kilogram |
|||||

Sign |
ton |
weights |
oats |
kg |
hg |
dag |
g |

Relationships between adjacent units of measurement |
1 ton = 10 quintals |
1 quintal = 10 oats = 0.1 tons |
1 nest = 1kg = 0.1 quintals |
1kg = 10hg = 0.1 oats |
1hg = 10dag = 0.1kg |
1dag = 10g = 0.1hg |
1g = 0.1dag |

c) In the table of units of length (or table of units of measurement of mass):

– The larger unit is 10 times the next smaller unit.

– Smaller unit equals \(\frac{1}{{10}}\) the next larger unit.

Lesson 2 Textbook page 152

Write (in the form):

a) 1m = 10dm = … cm = … mm b) 1m = \(\frac{1}{{10}}\)dam = 0.1 dam

1km = … m 1m = … km = … km

1kg = … g 1g = … kg = … kg

1 ton = … kg 1kg = … ton = … ton.

*Solution guide:*

a) 1m = 10dm = 100cm = 1000mm b) 1m = \(\frac{1}{{10}}\)dam = 0.1dam

1km = 1000m 1m = \(\frac{1}{{1000}}\)km = 0.001km

1kg = 1000g 1g = \(\frac{1}{{1000}}\)kg = 0.001kg

1 ton = 1000kg 1kg = \(\frac{1}{{1000}}\) ton = 0.001 ton.

Lesson 3 Textbook page 153

Write the correct number in the dot (follow the pattern):

a)

5285m = 5km285m = 5.285km

1827m = …km…m = …km

2063m = …km…m = …km

702m = …km…m = …km

b)

34dm=..m…dm=…m

786cm=…m…cm=…m

408cm=…m…cm=…m

c)

6258g=6kg258g=6,258kg

2065g=…kg…g=…kg

8047kg=…ton…kg=…ton

*Solution guide:*

a) 5285m=5km285m=5,285km.

1827m=1km827m=1,827km

2063m=2km63m=2,063km

702m=0km702m=0,702km.

b) 34dm=3m4dm=3.4m

786cm=7m86cm=7.86m

408cm=4m8cm=4.08m

c) 6258g=6kg258g=6,258kg

2065g=2kg65g=2,065kg

8047kg=8ton 47kg=8,047ton.

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