Number Sense Book Part 1 Dts

Number Sense Number Sense is memorization and practice. The secret to getting good at number sense is to learn how to recognize and then do the rules accurately . Then learn how to do them quickly. Every practice should be under a time limit.

The First Step ,[object Object],[object Object],[object Object],[object Object]

2 x 2 Foil (LIOF) Working Backwards ,[object Object],[object Object],[object Object],[object Object],[object Object]

Squaring Numbers Ending In 5 ,[object Object],[object Object]

Ending In 5 Consecutive Decades ,[object Object],[object Object]

Ending In 5 Ten’s Digits Both Even ,[object Object],[object Object]

Ten’s Digits Both Odd – Ending In 5 ,[object Object],[object Object]

Ending in 5 Ten’s Digits Odd & Even ,[object Object],[object Object]

Multiplying By 12 ½ (1/8 Rule) ,[object Object],[object Object]

Multiplying By 16 2/3 (1/6 Rule) ,[object Object],[object Object]

Multiplying By 33 1/3 (1/3 Rule) ,[object Object],[object Object]

Multiplying By 25 (1/4 Rule) ,[object Object],[object Object]

Multiplying By 50 (1/2 Rule) ,[object Object],[object Object]

Multiplying By 75 3/4 Rule ,[object Object],[object Object],[object Object]

Multiplying By 125 1/8 Rule ,[object Object],[object Object]

Multiplying When Tens Digits Are Equal & The Unit Digits Add To 10 ,[object Object],[object Object]

Multiplying When Tens Digits Add To 10 & The Units Digits Are Equal ,[object Object],[object Object]

Multiplying Two Numbers in the 90’s ,[object Object],[object Object],[object Object]

Multiplying Two Numbers Near 100 ,[object Object],[object Object],[object Object]

Multiplying Two Numbers With First Numbers Equal & A Zero In The Middle ,[object Object],[object Object],[object Object]

Multiplying By 3367 (10101 Rule) ,[object Object],[object Object]

Multiplying A 2-Digit Number By 11 (121 Pattern) ,[object Object],[object Object],[object Object],Work Right to Left Work Right to Left Work Right to Left Work Right to Left Work Right to Left

Multiplying A 3-Digit Number By 111 (1221 Pattern) ,[object Object],[object Object],[object Object],[object Object],Work Right to Left Work Right to Left Work Right to Left Work Right to Left Work Right to Left

Multiplying A 3-Digit Number By 111 (12321 Pattern) ,[object Object],[object Object],[object Object],[object Object],[object Object],Work Right to Left Work Right to Left Work Right to Left Work Right to Left Work Right to Left

Multiplying A 3-Digit Number By 111 (12321 Pattern) Work Right to Left Work Right to Left Work Right to Left Work Right to Left Work Right to Left

Number Sense Book Part 1 Dts

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Number Sense Book Part 1 Dts