Public learning track
Subtracting Multiples of Ten and Subtracting from Decade Numbers
1st Grade · Math · Open Global Math
7 lessons
Goal
Subtract multiples of 10 from multiples of 10 and subtract single digits from decade numbers using concrete models, number lines, and inverse addition relationships.
Featured Diagrams
Subtracting Tens from a Two-Digit Number with Base 10
7 lessons
0 of 7 done
- 1Subtracting Tens from a Two-Digit Number with Base 10Up nextStart
- 2Subtracting Multiples of Ten on a Number LinePremiumNot started yet
- 3Using Addition Facts to Subtract Multiples of TenNot started yet
- 4Subtracting a Single Digit from a Decade Number with ModelsNot started yet
- 5Subtracting a Single Digit from a Decade Number Using Number BondsNot started yet
- 6Mental Subtraction from Decade NumbersNot started yet
- 7Solving Subtraction Word Problems with Multiples of TenNot started yet
Curriculum Framework
1st Grade · Math · Open Global Math
1
9 lessons
Place Value and Flexible Grouping to 120
Understand tens and ones as place value units and compose and decompose two-digit and three-digit numbers up to 120 in standard and flexible ways.
2
7 lessons
Comparing and Ordering Numbers Up to 120
Compare and order two-digit and three-digit numbers up to 120 using place-value reasoning, comparative terms, and comparison symbols (>, <, =).
3
6 lessons
Mental Patterns: 1 More, 1 Less, 10 More, 10 Less
Mentally find 1 more, 1 less, 10 more, and 10 less than any two-digit number and explain digit patterns without counting.
4
9 lessons
Adding Two-Digit Numbers Within 100
Add within 100 using concrete models, number lines, place-value strategies, and expanded column methods, composing a ten when needed.
5
7 lessons
Subtracting Multiples of Ten and Subtracting from Decade Numbers
Subtract multiples of 10 from multiples of 10 and subtract single digits from decade numbers using concrete models, number lines, and inverse addition relationships.