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ADDING & SUBTRACTING NEAR-MULTIPLES

Add or subtract near-multiples like 99, 198, or 999 using easy adjustments.

L4L5
CS.N.3.2(III)CS.N.4.4(IV)
Section 1 / 3
LESSONS.CONTENT.MENTALTRICKSNEARMULTIPLES.S1TITLE

lessons.content.mentalTricksNearMultiples.s1Body

56 + 99
199 is almost 100
256 + 100 = 156
3Subtract 1: 156 − 1 = 155
= 155
45 + 198
1198 is almost 200
245 + 200 = 245
3Subtract 2: 245 − 2 = 243
= 243

LEADER TIP

Use 'adjust and compensate' language consistently: +99 = +100 then -1. Make it a class mantra.

BEFORE THIS LESSON, TRY

🎯Rounding to Nearest 10 & 100

PRACTICE WITH THESE GAMES

🔢Quick CalculateMath Sprint🎯Addition Quiz

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