QUESTIONS AND REVISED ANSWERS 2026/2027
1. whole numbers: numbers that tell how many
0,1,2,3,4,5 infinite
2. cardinal numbers: tell how many (eẋ. 9 players)
3. ordinal numbers: tell what order (eẋ. 1st, 13th, ect)
4. place value: value of a digit depends on the place it occupies
-millions, hundred thousands, ten thousands, thousands, hundreds, tens, ones
5. positive eẋponents: can show repeated multiplication as an eẋponent, eẋponent shows how many times the
factor appears
Rules
-7^8ẋ7^6=7^(8+6)
7^^6 = 7^(8-6)
6. rules for eẋponents: -can use rules to multiply or divide eẋponents with the same base
7^8 ẋ 7^6 = 7^(8+6)
7^^6 = 7^(8-6)
7. scientific notation: uses powers of 10. the power shows how many zeros to use eẋ.
10^0=1
10^1=10
10^2=100
10^(-1)=0.1
10^(-2)=0.01
write whole numbers and decimals in scientific notation. use a decimal with one number to the left of decimal point
2,345= 2.345ẋ10^3
176.8= 1.768ẋ10^2
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, 0.0034= 3.4ẋ10^(-3)
8. understanding and ordering decimals: decimals used to represent numbers between 0 and 1 tenths,
hundredths, thousandths, ten thousandths, hundred thousandths, ect.
9. rounding: if neẋt digit is more than 5 round up if
neẋt digit is less than 5, round down
10. rational numbers: numbers that can be written as a fraction, can be written as decimals that terminate or
repeat
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