Featured titleMath

Place value - 1st grade

Name: Place value - 1st grade
Genre: Math
Released: 2016-05-10

Math

A simple lesson for 1st grade where we practice place value with 2-digit numbers (tens and ones), plus naming and writing these numbers. For example, the number 2 tens 5 ones is written as 25 and is called "twenty-five". Check out also my workbook Math Mammoth Place Value 1 at

Année

2016

Durée

21m

IMDb

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Commentaires

8 commentaires

Barbie Samie AntonioOct 22, 2025

Mathy my mascot has given us two bar graphs to study. The first one lists Mathy's socks by color. The second one tells us how many math problems Mathy solved on various ways. I have fun figuring out answers to various questions concerning the graphs -- and you can too! Check out also Math Mammoth Grade 1 Complete Curriculum at

SRIDHARAN BALANOct 22, 2025

Wilfried Oct 22, 2025

In this lesson we add and subtract whole tens, such as 50 + 40 or 90 - 70, using mental math. First, students can use pictures (base ten blocks) to do that, but I'm sure they will soon notice the SHORTCUT: you can simply work with the number of tens the same way you add or subtract single-digit numbers. That way, 50 + 40 becomes 5 tens + 4 tens, which is 9 tens. Lastly, Mathy gives us a challenging addition problem to solve... making TENS helps a lot! Check out also my workbook Math Mammoth Place Value 1 at

laxmi_magarOct 22, 2025

Freda LumangaOct 22, 2025

I explain how the word "teen" in the "teen numbers" actually refers to ten. For example, fourteen means "four-ten", or ten plus four. Thinking of it that way, these "teen numbers" (thirteen, fourteen, fifteen, etc.) tie in neatly with place value. We also practice with a hundred-chart, finding numbers ending in 5, whole tens, numbers in the 40s, and such. Check out also my workbook Math Mammoth Place Value 1 at

Loopa queenOct 22, 2025

user5693481425344Oct 22, 2025

chukwuezesamuelOct 22, 2025

Place value - 1st grade

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