Finding The Unknown Number In A Number Sentence!

NCSCOS

3rd grade 5.04

By: Stephanie Irizarry

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Goals and StandardsGoal 5

• Algebra- The learner will recognize, determine, and represent patterns and simple mathematical relationships.

Objective 5.04:

• Find the value of the unknown in a number sentence.

Student Objective:

• Students will be able to find the value of unknown number in a number sentence with 85% accuracy.

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Let x be 5. Solve for answer.

17+x= ___

A) 21

B) 12

C) 35

D) 22

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Determine the number missing.

6 x __ = 42

B) 7

A) 36 C) 9

D) 5

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Which number sentence could be used to find how many candles are SHADED?

A) 4x__= 12; Missing # is 3

B) 3+4= __; Missing # is 7

C) 4x3= __; Missing # is 7

D) 3+3+4=__; Missing # is 10

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Which number sentence matches the picture?

A) =8 =8

x

+

= 49

= 16

B) =7 =6

C) = 7 =7

D) =7 =9

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A=1 B=2 C=3 D=4 E=5 F=6 G=7 H=8 I=9 J=10 K=11 L=12 M=13 N=14 O=15 P=16 Q=17 R=18 S=19 T=20 U=21 V=22 W=23 X=24 Y=25 Z=26

Using the code below solve the problem.

M + W / B = ____

1) P=16

2) R=18

3) H=8

4) D=4

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A=1 B=2 C=3 D=4 E=5 F=6 G=7 H=8 I=9 J=10 K=11 L=12 M=13 N=14 O=15 P=16 Q=17 R=18 S=19 T=20 U=21 V=22 W=23 X=24 Y=25 Z=26

Using the code add each row than add the two numbers together.

D+P+U = _____

+ V-E+J U = + _____

Answer

1) 24

2) 69

3) 68

4) 12

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Congratulations you have completed the task!!