#### 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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### STAAR Videos

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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

### Teaching videos

### STAAR Videos

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To view all the posts for the 3rd Grade Reporting Category 2 review, click __here__.

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