One Atta Time Flash Cards Distance Learning Create New Sheet Select a Worksheet > Version 1 Version 2 Version 3 Version 4 Version 5 Version 6 Version 7 Version 8 Version 9 Version 10 Grab 'em All Counting Groups of Ten 1nbt2c Count how many tens are shown by looking at groups of 10 blocks.Use skip-counting by 10s to find the total number of blocks.Tell the difference between the number of tens and the total number of ones.