مسابقة المتفوقين
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Questions and Answers

ماالخاصية التي تلاحظها في الجملة العددية التالية 12 + ( 15 + 14 ) = ( 12 +15) +14

  • خاصية التجميع (correct)
  • خاصية العنصر المحايد
  • خاصية الإبدال

65-(45-20) = (65-45)-20 هل

خطأ (B)

عدد مكون من الأرقام 5 و 2 و 7 وعند تقريبه لأقرب مئة يكون الناتج 800 . فما هو هذا العدد؟

  • 257
  • 527
  • 752 (correct)
  • 725

لدى حنان 236 ريالاً ولدى رندة 289 ريالاً
هل إجمالي مالدى حنان ورندة معاً أكثر من 600 ريالاً . وضح إجابتك .

<p>لا أقل من 600 ريال لأن ما معهما يساوي 525 ريالا</p> Signup and view all the answers

في نهاية لعبة حصل محمد على 426 نقطة وحصل أحمد على 158 نقطة بكم يزيد عدد نقاط محمد عن عدد نقاط أحمد ؟

<p>426-158=268 نقطة</p> Signup and view all the answers

Flashcards

Associative Property of Addition

Changing the grouping of numbers in an addition problem does not change the sum.

Numerical Expression Evaluation

Determining the value of an expression by following the order of operations, like parentheses first.

Rounding to the Nearest Hundred

Expressing a number to its nearby hundred.

Combined Money Calculation

Adding money amounts to find a total.

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Difference in Points

Finding the difference between two point values.

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Study Notes

Properties of Arithmetic Operations

  • The commutative property of addition is demonstrated in the equation 12 + (15 + 14) = (12 + 15) + 14, where the order of the numbers being added does not change the result.

Solving Numerical Expressions

  • Evaluating the expression 65 - (45 - 20) = (65 - 45) - 20 shows that the order of operations does not affect the result.

Approximation of Numbers

  • A number composed of 5, 2, and 7, when approximated to the nearest hundred, yields 800.

Money and Basic Arithmetic

  • Hanan has 236 riyals and Randa has 289 riyals, making their combined amount more than 600 riyals.

Comparing Scores

  • In a game, Mohammed scored 426 points and Ahmed scored 158 points, making Mohammed's score 268 points higher than Ahmed's.

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