2.NBT.2:
Number And Operations In Base Ten
Understand Place Value.
Count within 1000; skip-count by 5s, 10s, and 100s.
1.G.3:
Geometry
Reason With Shapes And Their Attributes.
Partition circles and rectangles into two and four equal shares, describe the shares using the words halves, fourths, and quarters, and use the phrases half of, fourth of, and quarter of. Describe the whole as two of, or four of the shares. Understand for these examples that decomposing into more equal shares creates smaller shares.
1.MD.3:
Measurement And Data
Tell And Write Time.
Tell and write time in hours and half-hours using analog and digital clocks.
1.NBT.2c:
Number And Operations In Base Ten
Understand Place Value.
The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones).