Flash Cards
1/19
Define arithmetic expression.
An arithmetic expression is a mathematical phrase that combines numbers and operations (like +, -, ×, ÷) to represent a value.
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2/19
What is the value of 13 + 2?
The value of the expression 13 + 2 is 15.
3/19
What does the '=' sign represent?
The '=' sign denotes equality, showing that an arithmetic expression equals its value, e.g., 13 + 2 = 15.
4/19
How to express total lunch expense in a week?
Mallika's total lunch expense from Monday to Friday is expressed as 5 × 25 (5 days × ₹25 per day).
5/19
How can you express the number 12?
The number 12 can be expressed as 10 + 2, 15 - 3, 3 × 4, and 24 ÷ 2.
6/19
What signs are used to compare expressions?
Expressions can be compared using '=', '>', and '<' based on their values.
7/19
Which is greater: 10 + 2 or 7 + 1?
10 + 2 (value is 12) is greater than 7 + 1 (value is 8).
8/19
Which is less: 13 - 2 or 4 × 3?
13 - 2 (value is 11) is less than 4 × 3 (value is 12).
9/19
Complete: 13 + 4 = ____ + 6.
The answer is 11, because 13 + 4 = 17 and 11 + 6 = 17.
10/19
Order these expressions: 67 - 19, 67 - 20, 35 + 25.
In ascending order: 67 - 20, 67 - 19, 35 + 25.
11/19
How do scenarios help compare expressions?
By imagining real situations, we can compare expressions without calculating, such as comparing marbles.
12/19
Which is greater: 1023 + 125 or 1022 + 128?
1023 + 125 is less than 1022 + 128, because Joy ends up with more marbles.
13/19
Which is equal: 113 - 25 or 112 - 24?
Both expressions equal to 88, showing they are equal.
14/19
What operations are used in arithmetic expressions?
The four basic operations are addition (+), subtraction (-), multiplication (×), and division (÷).
15/19
Why can different expressions have the same value?
Different combinations of numbers and operations can result in the same numerical value.
16/19
What does 5 × 25 represent?
It represents '5 times 25', equaling ₹125, Mallika's total lunch expense in a week.
17/19
What does 7 + 1 > 10 + 2 indicate?
It indicates that 7 + 1 is greater than 10 + 2, based on their calculated values.
18/19
What does '<' signify?
'<' signifies that one expression evaluates to a lesser value than another.
19/19
What's a common mistake in expressions?
A common mistake is miscalculating values; always check your arithmetic!
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