ARM 10.53.504. MONTANA GRADE 2 MATHEMATICS CONTENT STANDARDS

(1) Mathematics operations and algebraic thinking content standards for Grade 2 are to: (a) use addition and subtraction within 100 to solve one- and two-step problems in context involving all problem types. This standard should incorporate cultural context relating to Montana Indigenous Peoples and local communities; (b) flexibly, accurately, and efficiently add and subtract within 20 using mental strategies; (c) determine whether a group of objects, up to 20, has an odd or even number of members; and (d) use addition to find the total number of objects arranged in rectangular arrays. (2) Mathematics number and operations in base ten content standards for Grade 2 are to: (a) understand one hundred is a unit composed of ten tens and that three-digit numbers represent amounts of hundreds, tens, and ones; (b) skip-count by 5s, 10s, and 100s; (c) flexibly count, read, write, and represent numbers to 1000; (d) compare two three-digit numbers using >, =, and < symbols; (e) flexibly, accurately, and efficiently add and subtract within 100 using multiple strategies; (f) add up to four two-digit numbers using multiple strategies; (g) add and subtract within 1000 using multiple strategies; (h) using place value, add or subtract 10 or 100 from a given number; and (i) understand and make connections between different strategies for addition and subtraction. (3) Mathematics measurement and data content standards for Grade 2 are to: (a) measure the length of an object by selecting and using appropriate tools; (b) understand the relationship between unit sizes and number of units by measuring a single object using two different units of common measurement; (c) estimate lengths using units of common measurement; (d) measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit; (e) use addition and subtraction within 100 to solve problems in context involving lengths that are given in the same units. This standard should incorporate cultural context relating to Montana Indigenous Peoples and local communities; (f) represent whole numbers as lengths from 0 and represent sums and differences within 100 on a number line; (g) tell and write time from analog and digital clocks to the nearest five minutes using a.m. and p.m.; (h) solve problems in context involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately; (i) generate measurement data and present the data in multiple ways. This standard should incorporate cultural context relating to Montana Indigenous Peoples and local communities; (j) organize, represent, and interpret data with up to four categories. This standard should incorporate cultural context relating to Montana Indigenous Peoples and local communities; and (k) solve addition and subtraction problems of all types using data presented. (4) Mathematics geometry content standards for Grade 2 are to: (a) recognize and draw shapes having specified attributes; (b) partition a rectangle into rows and columns of same size squares and find the total number; and (c) partition circles and rectangles into equal shares, recognize that equal shares need not have the same shape, and express the shares in two-halves, three-thirds, and four-fourths.