Math standard

Math standard

by Yue Gao

​NY-2.MD.5

Use addition and subtraction within 100 to solve word problems involving lengths that are given in the same units, e.g., using drawings and equations with a symbol for the unknown number to represent the problem. (2-ESS2-1)​

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​What does that mean?

​Students should be able to solve length-related word problems by using equations and visuals (e.g. rulers).

Grade 2 Mathematics Module 2, Topic D | EngageNY

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Open Ended

Write an equation and solve the problem:

(Use a symbol for the unknown number. EX: 50 - 22 = __)

Maddy and Riley compared their jump ropes. Maddy’s jump rope was 67 inches long. Riley’s jump rope was 58 inches long. How much longer was Maddy’s jump rope than Riley’s?

Multiple Choice

How long is the combined length of lines c and d?

• 11cm+8cm=__

  19cm

• 26cm+19cm=__

  45cm

• 11cm+5cm=__

  16cm

• 10cm+7cm=__

  17cm