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Introduction to Percents
Introduction to Percents — from OpenStax Prealgebra 2e.
Introduction to Percents
When you deposit money in a savings account at a bank, it earns additional money. Figuring out how your money will grow involves understanding and applying concepts of percents. In this chapter, we will find out what percents are and how we can use them to solve problems.
ປັດຈຸບັນທ່ານ ບໍ່ມີເຄື່ອງຄິດໄລ່ທີ່ຈະແກ້ໄຂບັນຫານີ້ໄດ້, ແຕ່ສ່ວນຂອງມັນສາມາດຄິດໄລ່ໄດ້. ພະຍາຍາມອັນໃດອັນໜຶ່ງຂ້າງລຸ່ມນີ້ ຫຼື ພິມຕົວເອງເອງ.
ຕົວສະແດງທີ່ໃຊ້ຢູ່ທີ່ນີ້
ກົດຕົວອັກສອນໃດໜຶ່ງເພື່ອເບິ່ງຄວາມໝາຍເຕັມ, ຮູບ ແລະ ຕົວອັກສອນແຕ່ລະຕົວໃນມັນໝາຍຄວາມວ່າແນວໃດ.
ຄໍາຖາມທີ່ຄົນຖາມ
Why does the order of operations matter?
Because 2 + 3 × 4 would otherwise be two different numbers. The convention (brackets, exponents, multiplication and division, addition and subtraction) exists so every reader gets the same value from the same expression.
How do I check an arithmetic answer?
Estimate first (round every number and compute roughly), then compare. If the estimate and the exact answer disagree by more than a little, one of them is wrong. The solver shows every operation, so you can find which line went astray.
Why are fractions harder than decimals?
They are not harder, they are more exact: 1/3 is a precise number, 0.333 is an approximation. Fractions need a common denominator to add, which is the one extra step people trip on.
ບາງສ່ວນຂອງ ໜ້າ ນີ້ ຖືກປັບແຕ່ງຈາກ OpenStax Prealgebra 2e (CC BY-NC-SA 4.0). ຖືກປະສົມປະສານແລະອະທິບາຍຄືນໃໝ່ທີ່ນີ້; ຄວາມຜິດພາດແມ່ນຂອງເຮົາ. ເນື່ອງຈາກແຫຼ່ງຂອງມັນຖືກອະນຸຍາດໃຫ້ໃຊ້ເພື່ອບໍ່ໃຫ້ເປັນການຄ້າ, ບົດຮຽນນີ້ແມ່ນຟຣີ, ບໍ່ຂາຍຫຍັງ, ແລະ ແບ່ງປັນພາຍໃຕ້ອະນຸຍາດດຽວກັນ.