# Make a Ten

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Use this HTML code to display a screenshot with the words "Click to Run". Place Value Addition Subtraction PhET ten o soporte de e profesores como vostede.

• Place Value
• Subtraction
• Aritmética

### Description

Add numbers by making tens. Break apart and combine numbers while focusing on place value. Use the adding screen to add any two numbers. Use the game screen to apply your make-a-ten strategies!

### Obxectivos de Aprendizaxe

• Improve understanding of place value by using different sizes of papers for ones, tens, and hundreds.
• Develop mental math strategies when taking apart and putting together numbers.
• Use the “make a ten” strategy when counting and doing addition.
• Develop a mental model of the basic properties of numbers including commutativity, associativity, and closure.

### Standards Alignment

#### Common Core - Math

1.NBT.B.2
Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
1.NBT.B.2a
10 can be thought of as a bundle of ten ones — called a "ten."
1.NBT.B.2b
The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
1.NBT.B.2c
The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).
1.NBT.C.4
Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.
1.NBT.C.5
Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
1.NBT.C.6
Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90 (positive or zero differences), using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.
1.OA.B.3
Apply properties of operations as strategies to add and subtract.2 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)
1.OA.C.6
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).
2.NBT.B.5
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.
2.NBT.B.6
Add up to four two-digit numbers using strategies based on place value and properties of operations.
2.NBT.B.7
Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
2.NBT.B.8
Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.
2.OA.C.3
Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.
2.OA.C.4
Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.
Version 1.0.16

### Teacher Tips

 A guía de profesores (pdf) contén consellos creados polo equipo PhET. ( PDF ).

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Albanian All shqip Fito numrin 10
Arabic All العربية تكوين العَشَرة
Basque All Euskara Hamarrekotan
Bosnian All Bosanski Dopuni do 10
Chinese (China) All 中文 (中国) 获得一个10
Chinese (Taiwan) All 中文 (台灣) Make a Ten_湊到 10
Danish All Dansk Lav en 10'er
Dutch All Nederlands Maak een tien
French All français Faire un dix
German All Deutsch Mach zehn draus
Greek All Ελληνικά Φτιάξε το δέκα
Gujarati All Gujarati દસ બનાવો અંક જ્ઞાન - નિકુંજ સવાણી દ્વારા
Hungarian All magyar Egészítsd ki 10-re
Irish All Gaeilge Bain Deich Amach
Italian All italiano Arriva a 10
Japanese All 日本語 10を作ろう
Kazakh All Kazakh Сандардың құрамы
Korean All 한국어 10 만들기
Latvian All Latviešu Izveido desmitus
Marathi All मराठी १० बनवा
Mongolian All Монгол (Монгол) Арвыг Үүсгэх
Persian All فارسی یک ده بساز
Polish All polski Traf dziesiątkę
Portuguese (Brazil) All português (Brasil) Tire um 10
Russian All русский Состав числа
Serbian All Српски Допуни до 10
Spanish All español Haz un Diez
Spanish (Mexico) All español (México) Haz un Diez
Spanish (Peru) All español (Perú) Haz un Diez
Swedish All svenska Skapa en tia
Turkish All Türkçe Onluk Yap
Ukrainian All українська Попади в десятку!
Vietnamese All Tiếng Việt Tạo ra 10

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