Tens and OnesWhy the 4 in 47 is worth forty, not four.1st GradeIn a two-digit number, the left digit countstens and the right digit counts ones.47 = 4 tens + 7 ones363 tens, 6 onesThirty and six — say it and you can hear it.808 tens, 0 onesThe zero holds the ones place open.191 ten, 9 onesNineteen breaks the pattern when you say it, not when you write it.525 tens, 2 onesFifty-two. The tens come first in speech too.THE COMMON MISTAKE✗ 47 is a 4 and a 7✓ 47 is 40 and 7The position tells you the value. Swap the digits and 74 is a completely different number.Ten ones can always be traded for one ten. That trade is whatcarrying is.Tens and Oneswww.littleactivity.com

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Math · 1st Grade

Tens and Ones

Why the 4 in 47 is worth forty, not four.

How to use it

Build the number with straws: bundles of ten, then singles.

Free · print-ready PDF · US Letter and A4

Grade
1st Grade
Ages
6–7
Subject
Math
Pages
1

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