# Educator Resources for Primary Krypto

The rules of Krypto are simple: combine five numbers using the four arithmetic operations (+, –, ×, ÷) to arrive at a “target” number. The game can be used as a teaching tool or independent practice activity to allow students to practice mental math, order of operations, and logical thinking while solving a puzzle.

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# Numbers and Operations Lesson Plan: The Online Game Krypto

In this lesson plan, which is adaptable for grades 3-8, students use BrainPOP resources to explore the function of addition, subtraction, multiplication, and division in problem solving. Students will select the correct operation and numeral to create an accurate number sentence in interactive game play.

Common Core State Standards Alignment:

CCSS.Math.Cont.3.OA.B.5 Apply properties of operations as strategies to multiply and divide.

CCSS.Math.Cont.3.OA.C.7 Fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division (e.g., knowing that 8 _ 5 = 40, one knows 40 ÷ 5 = 8) or properties of operations. By the end of Grade 3, know from memory all products of two one-digit numbers.

CCSS.Math.Cont.3.NBT.A.2 Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

CCSS.Math.Cont.4.NBT.B.5 Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.

CCSS.Math.Cont.4.NBT.B.6 Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.