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Qual pagina contiene la question 6?
Qual pagina contiene la question 6?
Qual numero corresponde a le question 11?
Qual numero corresponde a le question 11?
Qual question se trova in pagina 13?
Qual question se trova in pagina 13?
Quantas preguntas se mentiona in le lection 4?
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Study Notes
Whole Numbers - 2 Digit Numbers
- Ten is equal to one ten or ten units (ones).
- Twelve is equal to one ten and two units, or ten units and two units.
- Thirteen equals one ten and three units.
- Sixteen equals one ten and six units.
- Nineteen equals one ten and nine units.
- Thirty equals three tens or thirty units.
- Forty equals four tens or forty units.
- Seventy equals seven tens or seventy units
- Ninety equals nine tens or ninety units.
- Twenty equals two tens or twenty units.
Place Value
- Numbers are composed of units (ones) and tens.
- The units digit is the rightmost digit in a number.
- The tens digit is the digit to the left of the units digit.
- Example: In the number 25, 5 is the units digit and 2 is the tens digit.
Expanded Form
- Writing a number as a sum of its place values.
- Example: 58 is equal to 5 tens plus 8 units (50 +8) , or 50 + 8 = 58.
Short Form
- Converting expanded form back to standard form.
- Example: 40 + 3 = 43, two tens plus five units equals 25.
Even and Odd Numbers
- Even numbers end in 0, 2, 4, 6, or 8.
- Odd numbers end in 1, 3, 5, 7, or 9.
Smallest and Largest 2-Digit Numbers
- The smallest two-digit number is 10.
- The largest two-digit number is 99.
Numbers Rounded to Nearest Ten
- Rounding numbers to the nearest ten involves finding the closest multiple of 10.
- Example: 273 rounded to the nearest ten is 270.
Numbers Rounded to Nearest Hundred
- Rounding numbers to the nearest hundred involves finding the closest multiple of 100.
- Example: 183 rounded to the nearest hundred is 200.
Number Sentences
- Use mathematical symbols and operations to express relationships between numbers.
- Example: 5 + 3 = 8.
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Description
Este quiz explora os conceptos fundamentales de numeros completo, incluindo place value e formas expandidas. Aprende a identificar a unidade e o dezena em numeros de 2 digitos e como converter entre formas expandidas e curtas.
