Matemática Elementar

Problema 1

Put these objects in order from shortest to longest:

A pencil that is $6$ paper clips long
A crayon that is $3$ paper clips long
A book that is $10$ paper clips long

Write them in order: shortest first.

Problemas

1. Put these objects in order from shortest to longest:

A pencil that is $6$ paper clips long
A crayon that is $3$ paper clips long
A book that is $10$ paper clips long

Write them in order: shortest first.

2. Jake measured his desk using his hand span. His desk is $5$ hand spans long. His friend Mia measured the same desk and got $6$ hand spans.

Why might they have gotten different numbers?

3. A marker is $8$ paper clips long. A glue stick is $5$ paper clips long. How much longer is the marker than the glue stick?

$8 - 5 = \underline{\quad}$

The marker is $\underline{\quad}$ paper clips longer.

4. Name a shape that matches each description:

a) I have $4$ sides that are all the same length and $4$ square corners. What am I?

b) I have $3$ sides and $3$ corners. What am I?

c) I have no sides and no corners. I am perfectly round. What am I?

d) I have $4$ sides — two are long and two are short — and $4$ square corners. What am I?

5. A ribbon is $12$ paper clips long. A piece of string is $9$ paper clips long. A straw is $15$ paper clips long.

a) Which is the longest?

b) Which is the shortest?

c) How much longer is the straw than the ribbon?

Gabarito — Measurement and Geometry

1. Order from shortest to longest by comparing the numbers:

Crayon — $3$ paper clips (shortest)
Pencil — $6$ paper clips
Book — $10$ paper clips (longest)

$3 < 6 < 10$

2. Jake and Mia got different numbers because their hands are different sizes. Mia probably has smaller hands, so it took more hand spans to cover the same desk. When we measure with non-standard units (like hands), the size of the unit affects the count.

3. Subtract the shorter from the longer:

$8 - 5 = 3$

The marker is $3$ paper clips longer than the glue stick.

4. a) A square — $4$ equal sides and $4$ square (right-angle) corners.

b) A triangle — $3$ sides and $3$ corners.

c) A circle — no sides, no corners, perfectly round.

d) A rectangle — $4$ sides with two longer and two shorter, and $4$ square corners.

5. Compare the lengths: ribbon $= 12$ , string $= 9$ , straw $= 15$ .

a) The straw is the longest at $15$ paper clips.

b) The string is the shortest at $9$ paper clips.

c) $15 - 12 = 3$ . The straw is $3$ paper clips longer than the ribbon.