Adding and Subtracting Multiples of 10
More Lessons for Singapore Math
Videos, worksheets, games and activities to help students learn adding and subtracting multiples of 10 in Singapore Math.
Singapore Math (Grade 1B, Unit 18): Adding a Multiple of 10 to a Two-Digit Number
How to add a two-digit number and a multiple of 10, using concrete models and strategies based on place value.
Uses number discs to show how to act out the following problems:
42 + 40 = ?
50 + 36 = ?
Addition Using Place Value Discs
Singapore Math (Grade 1, Unit 18): Subtract a Multiple of 10 from a Two-Digit Number
How to subtract a multiple of 10 from a two-digit number, using concrete models and strategies based on place value.
Uses number discs to show scholars how to act out the following problems:
54 - 20 = ?
78 - 30 = ?
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