This week, students begin Number Worlds, Level F, Addition and Subtraction. Students gain more practice with number operations by moving onto two-digit problems. They also begin to develop skills in mental math by mentally computing two-digit operations. Students will gain more experience with problem solving by solving story problems.
Skills Focus
Add and subtract with a one and a two-digit number.
Add and subtract with two two-digit numbers.
Use mental arithmetic to add or subtract with a one and two-digit number operations.
Use mental arithmetic to add or subtract with two two-digit numbers.
Students can use mental arithmetic to add or subtract with a one- and a two-digit number.
Standard
4.NBT.4 Fluently add and subtract multi-digit whole numbers using the standard algorithm.
Vocabulary
addition
Activity:
Building Blocks Word Problems 4
SWB PG 10-11
Debrief:
White Board Mental Math
Homework:
U2W1L3HW
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