4.o For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or
drawings, and record the answer with a drawing or equation.

Understand and apply properties of operations and the relationship between addition and subtraction.
4. Understand subtraction as an unknownaddend problem. For example, subtract 10 – 8 by finding the number that makes 10
when added to 8.

Work with equal groups of objects to gain foundations for multiplication.
4. Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns;
write an equation to express the total as a sum of equal addends.

4. Determine the unknown whole number in a multiplication or division equation relating three whole numbers. For example,
determine the unknown number that makes the equation true in each of the equations 8 × ? = 48, 5 =÷ 3, 6 × 6 = ?.

4. Find all factor pairs for a whole number in the range 1–100. Recognize that a whole number is a multiple of each of its
factors. Determine whether a given whole number in the range 1–100 is a multiple of a given onedigit number. Determine
whether a given whole number in the range 1–100 is prime or composite.

5.NBT.4: Use place value understanding to round
decimals to any place.
