plz give some word problem related to integer fraction it decimal according to grade 7
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Answer:
Multiplication and Division of Integers
Properties of Integers
Properties of multiplication of integers
Word problems including integers
Fractions and Decimals worksheet for class 7
Some important Facts about Integers worksheet for class 7
Integers are a bigger collection of numbers which is formed by whole numbers and their negatives. These were introduced in Class VI.
You have studied in the earlier class, about the representation of integers on the number line and their addition and subtraction.
We now study the properties satisfied by addition and subtraction.
Integers are closed for addition and subtraction both. That is, a + b and a – b are again integers, where a and b are any integers.
Addition is commutative for integers, i.e., a + b = b + a for all integers a and b.
Addition is associative for integers, i.e., (a + b) + c = a + (b + c) for all integers a, b and c.
Integer 0 is the identity under addition. That is, a + 0 = 0 + a = a for every integer a.
We studied, how integers could be multiplied, and found that product of a positive and a negative integer is a negative integer, whereas the product of two negative integers is a positive integer. For example, – 2 × 7 = – 14 and – 3 × – 8 = 24.
DIVISION OF INTEGERS
We know that division is the inverse operation of multiplication. Let us see an example for whole numbers.
Since 3 × 5 = 15
So 15 ÷ 5 = 3 and 15 ÷ 3 = 5
Similarly, 4 × 3 = 12 gives 12 ÷ 4 = 3 and 12 ÷ 3 = 4
We can say for each multiplication statement of whole numbers there are two division statements. Can you write multiplication statement and its corresponding divison statements for integers?
Find each of the following products:
(a) 3 × (–1) (b) (–1) × 225
(c) (–21) × (–30)
(d) (–316) × (–1)
(e) (–15) × 0 × (–18) (f) (–12) × (–11) × (10)
(g) 9 × (–3) × (– 6)
(h) (–18) × (–5) × (– 4)
(i) (–1) × (–2) × (–3) × 4
(j) (–3) × (–6) × (–2) × (–1)