Grade 1 addition worksheet using base 10 blocks to solve addition problems with tens and ones.
A math worksheet for Grade 1 students titled "Addition with base 10 blocks (tens and ones)" featuring exercises to solve addition problems using visual base 10 blocks. The example shows 25 + 12 = 37, with illustrations of tens and ones blocks. The worksheet includes four addition problems (a) 14 + 23, (b) 20 + 34, (c) 42 + 21, (d) 33 + 26, and (e) 51 + 11, each with spaces to draw blocks and write the total in tens and ones.