Mathematics · 1st preparatory · First Term

Numbers and Their Operations — Operations on Integers

About this lesson

This unit teaches operations on integers, including addition, subtraction, multiplication, and division. It explains strategies such as using a number line and absolute values for addition, converting subtraction to addition of the additive inverse, and applying sign rules for multiplication and division. The unit also covers properties of addition and multiplication, such as closure, commutativity, associativity, identity elements, and distributivity. Real-life contexts include temperature changes in Saint Catherine City, a submarine's vertical movement, and comparing elevations in Egypt (Mount Catherine and Qattara Depression). By the end, students should be able to perform integer operations, apply properties, and solve word problems involving integers.

Main topics in this lesson

  • Operations on integers
  • Properties of addition and multiplication
  • Number line and absolute value strategies
  • Real-life applications of integers

Key terms and vocabulary

  • Addition
  • Subtraction
  • Multiplication
  • Division
  • Closure
  • Commutative
  • Associative
  • Additive Identity
  • Multiplicative Identity
  • Additive Inverse
  • Absolute Value
  • Integer

Questions and answers on Numbers and Their Operations — Operations on Integers - practice and revision

Multiple choice questions on this lesson in Mathematics for 1st preparatory, First Term, with practice exercises for revision and exam preparation.

1

أي عملية تُظهر خاصية الإبدال في الجمع؟

  • 1 3 + (-5) = (-5) + 3
  • 2 3 + 0 = 3
  • 3 3 + (-3) = 0
  • 4 3 + (2 + 1) = (3 + 2) + 1
2

ما ناتج (-24) ÷ 6؟

  • 1 -4
  • 2 4
  • 3 -18
  • 4 18
3

ما ناتج (-2) × 3 × (-1)؟

  • 1 6
  • 2 -6
  • 3 5
  • 4 -5
4

ما ناتج 0 + (-6)؟

  • 1 -6
  • 2 6
  • 3 0
  • 4 -12
5

غواصة على عمق 12 متراً تحت سطح البحر صعدت 5 أمتار، فما عمقها الجديد؟

  • 1 -7
  • 2 7
  • 3 -17
  • 4 17
6

ما ناتج (-8) + 3؟

  • 1 -5
  • 2 5
  • 3 -11
  • 4 11

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