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# Reporting Category 2 (TEKS 3.4 Whole Number Computations)

Updated: Feb 13, 2022

#### Computations and Algebraic Relationships

The videos in this post explain mathematics Texas Essential Knowledge and Skill 3.4:

Number and operations. The student applies mathematical process standards to develop and use strategies and methods for whole number computations in order to solve problems with efficiency and accuracy.

The STAAR videos below are selected released items from 3rd grade STAAR tests in 2016, 2018, 2019, and 2021. You can view the complete review of the 2017 STAAR test here.

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## 3.4A

solve with fluency one-step and two-step problems involving addition and subtraction within 1,000 using strategies based on place value, properties of operations, and the relationship between addition and subtraction

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## 3.4B

round to the nearest 10 or 100 or use compatible numbers to estimate solutions to addition and subtraction problems

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## 3.4D

determine the total number of objects when equally-sized groups of objects are combined or arranged in arrays up to 10 by 10

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## 3.4E

represent multiplication facts by using a variety of approaches such as repeated addition, equal-sized groups, arrays, area models, equal jumps on a number line, and skip counting

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## 3.4F

recall facts to multiply up to 10 by 10 with automaticity and recall the corresponding division facts

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## 3.4G

use strategies and algorithms, including the standard algorithm, to multiply a two-digit number by a one-digit number. Strategies may include mental math, partial products, and the commutative, associative, and distributive properties

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## 3.4H

determine the number of objects in each group when a set of objects is partitioned into equal shares or a set of objects is shared equally

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## 3.4J

determine a quotient using the relationship between multiplication and division

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## 3.4K

solve one-step and two-step problems involving multiplication and division within 100 using strategies based on objects; pictorial models, including arrays, area models, and equal groups; properties of operations; or recall of facts

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