Understanding the 'a times a over B' Trick

Understanding the 'a times a over B' Trick

Assessment

Interactive Video

Mathematics

6th - 7th Grade

Hard

Created by

Thomas White

FREE Resource

The video introduces a number sense trick called the 'a times a over B trick' for quickly solving certain math problems in your head. The instructor explains the trick through examples, highlighting the importance of the 'magic number' derived from subtracting the numerator from the denominator. The video also discusses the limitations of the trick, noting that it doesn't work for all problems. Viewers are encouraged to practice using a linked workbook and to subscribe for more content.

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22 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name of the trick introduced in the video?

a times a over B

b times b over A

d times d over C

c times c over D

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the video?

To provide a history lesson

To demonstrate a math trick

To explain a science concept

To teach a new language

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the expected format of the answer in the problem challenge?

Whole number

Improper fraction

Mixed fraction

Decimal

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in the 'a times a over B' trick?

Subtract the numerator from the denominator

Add the numerator and denominator

Multiply the numerator by the denominator

Divide the numerator by the denominator

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the magic number when the numerator is 11 and the denominator is 13?

3

2

1

4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term used for the number obtained by subtracting the numerator from the denominator?

Magic number

Prime number

Lucky number

Key number

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you calculate the whole number part of the answer?

Add the magic number to a

Divide a by the magic number

Multiply the magic number by a

Subtract the magic number from a

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