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Submarine Dive: 10 or 100 Feet Deeper

Grade 2 mental math: a submarine dives and rises 10 or 100 feet at a time as students add and subtract 10 or 100 from numbers 100 to 900.

Grade 2MathInteractive · Printable

Aligned to2.NBT.B.8

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What’s included

Single worksheet
Auto-graded online
1 Common Core standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 2
Subject: Math
Question types: Fill in the blank, Multiple choice, Matching, Short answer

About this worksheet

What students practice

Students mentally add 10 or 100 to a number between 100 and 900.
Students mentally subtract 10 or 100 from a number between 100 and 900.
Students tell which place changes when 10 or 100 is added or taken away.

How to use

Remind students that diving deeper adds feet and rising up takes feet away. Ask them to say which digit changes before they write each answer.

Curriculum

Common Core standard covered

2.NBT.B.8

Add or subtract 10 or 100 from a number between 100 and 900 in your head.

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