Page 233 - NUMINO TG_2A

15Unit Counting in Groups

NCTM Standard: Number and Operations - Understand numbers, ways of representing numbers,
relationships among numbers, and number systems - Understand meanings of operations and how
they relate to one another.

Unit Objective

Learn how counting in groups and repeated addition relate to multiplication.

Overview

Operation - Multiplication and Division

Multiply 3-digit numbers by 2-digit numbers. Divide 2 or 3-digit numbers by
(Grade 4, Unit 09) 2-digit numbers. (Grade 4, Unit 15)

Multiply 2-digit numbers. Divide 2 or 3-digit numbers by 10s.
(Grade 4, Unit 08) (Grade 4, Unit 14)

Multiply by 10s, 100s and 1000s. Divide 3-digit numbers by 1-digit
(Grade 4, Unit 07) numbers. (Grade 3, Unit 20)

Divide 2-digit numbers by 1-digit
numbers and identify quotients and

remainders. (Grade 3, Unit 19)

Relate multiplication with division. (Grade 3, Unit 13)

Multiply 2-digit numbers Multiply 2 or 3-digit numbers Multiply 3 numbers.
by 1-digit numbers. by 1-digit numbers. (Grade 3, Unit 12)
(Grade 3, Unit 10) (Grade 3, Unit 11)

Multiplication tables 1 to 10. (Grade 3, Unit 9)

Multiply by 2, 3, 4 and 5. Multiply by 1 to 6. Multiply by 1 to 9. Division by grouping.
(Grade 2, Unit 16) (Grade 2, Unit 17) (Grade 2, Unit 18) (Grade 2, Unit 19)

Count in groups, and learn multiplication. (Grade 2, Unit 15)

216 NUMINO Teacher s Guide