Estimating Sums and Differences

Estimating Sums and Differences

Assessment

Interactive Video

Mathematics

2nd - 3rd Grade

Hard

Created by

Thomas White

FREE Resource

In this episode of Math Matters, Mrs. Cook teaches second graders about estimating sums and differences of two-digit numbers. The lesson covers identifying benchmark numbers, rounding to the nearest benchmark, and using these skills to estimate sums. Students engage in an interactive activity estimating the number of glass gems in cups, using benchmark numbers to make their calculations easier. The lesson concludes with a reflection on learning goals and the importance of estimation in real life.

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35 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main focus of today's lesson?

Solving complex equations

Learning multiplication tables

Understanding fractions

Estimating sums and differences of two-digit numbers

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is estimating important in real life?

It helps in finding exact answers quickly

It is not useful outside of school

It is only used in math classes

It provides an approximate answer when exact numbers are not needed

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an estimate?

A random number

An approximate answer close to the exact one

An exact answer

A guess without any basis

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main goal of using estimates in math?

To make math more complicated

To find exact answers

To avoid doing calculations

To provide a quick and reasonable answer

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the benefit of using estimates in real life?

They are not useful outside of school

They are only used in math classes

They provide exact answers

They offer a quick and reasonable approximation

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should you have ready for the gem estimation activity?

A calculator

A piece of paper and a pencil

A ruler

A textbook

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many glass gems were in the first cup?

30

83

53

67

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