ALEX Classroom Resources

ALEX Classroom Resources  
   View Standards     Standard(s): [MA2019] (1) 14 :
14. Given a two-digit number, mentally find 10 more or 10 less than the number without having to count, and explain the reasoning used.
[MA2019] (1) 15 :
15. Subtract multiples of 10 from multiples of 10 in the range 10-90 (positive or zero differences), using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. Relate the strategy to a written method and explain the reasoning used.
Subject: Mathematics (1)
Title: Peg and Cat: Counting by Tens

Use this video with children to count along with Peg, Cat, and friends as they collect and count space rocks by 10s. While collecting space rocks for NASA, Ramone has time to show Peg, Cat, Richard, and Pig how to count by 10s to 100.

ALEX Classroom Resources: 1

Go To Top of page