Beep Counting by Tens (Math Activity) - Teacher Advisor With Watson

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Fluency Activity

Beep Counting by Tens

EngageNY3 min(s)

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1 Content Standard is aligned with this activity

1.NBT.C.5

Major StandardsSupporting StandardsAdditional Standards

Standard 1.NBT.C.5

Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

Part of Major Cluster 1.NBT.C

Prerequisites for 1.NBT.C.5

1st Grade

Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:

10 can be thought of as a bundle of ten ones - called a "ten."

The numbers from 11 to 19 are composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.

The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).

Upcoming Standards for 1.NBT.C.5

2nd Grade

Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.

Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.