Multiply 4-digits by 1-digit - White Rose Maths · 2020. 4. 29. · 1 Complete the sentences to...

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  • 1 Completethesentencestodescribethemultiplication.

    Th H T O

    1,000

    1,000 100

    100 10

    1 1 1

    1,000

    1,000 100

    100 10

    1 1 1

    1,000

    1,000 100

    100 10

    1 1 1

    Thereare onesaltogether.

    Thereare tensaltogether.

    Thereare hundredsaltogether.

    Thereare thousandsaltogether.

    2,213×3=

    2 Completethemultiplication.

    Useaplacevaluecharttohelpyou.

    2 1 0 2

    × 4

    3 Afootballstadiumholds2,214people.

    Thestadiumisfullfor4matchesinarow.

    Whatwastheattendanceforall4matches?

    4 Nijahiscalculating2,430×3

    Shemakesthisplacevaluecharttohelpher.

    Th H T O

    100

    100 10

    10

    10

    10

    1 1 1

    100

    100 10

    10

    10

    10

    1 1 1

    100

    100 10

    10

    10

    10

    1 1 1

    Shegetstheanswer729

    WhatmistakehasNijahmade?

    Whatisthecorrectanswer?

    5 Completethemultiplications.

    a) 3,126×3= c) 4,132×6=

    b) 4,812×2= d) 1,502×5=

    6 Ronisworkingout7,423×0

    DoyouagreewithRon?

    DidRonhavetouseacolumnmethod?Isthereaquickerway?

    Multiply4-digitsby1-digit

    ©WhiteRoseMaths2019

    The answer is 7,423

    7 4 2 3

    × 0

    7 4 2 3

  • 7 Workoutthesemultiplications.

    2,846×2

    2,846×4

    2,846×8

    Whatdoyounoticeabouttheanswers?

    8 248×10=2,480

    Withoutusingtheformalmethod,howcouldyouusethisfactto

    calculate248×9?

    Checkyouranswerusingtheformalmethod.

    Whichmethodwaseasier?

    9 Useeachdigitcardoncetowriteamultiplication.

    2 3 4 51

    ×

    Howmanydifferentproductscanyoufind?

    Whatistheclosestproductto8,000?

    Multiply4-digitsby1-digit

    ©WhiteRoseMaths2019

    4 Nijahiscalculating2,430×3

    Shemakesthisplacevaluecharttohelpher.

    Th H T O

    100

    100 10

    10

    10

    10

    1 1 1

    100

    100 10

    10

    10

    10

    1 1 1

    100

    100 10

    10

    10

    10

    1 1 1

    Shegetstheanswer729

    WhatmistakehasNijahmade?

    Whatisthecorrectanswer?

    5 Completethemultiplications.

    a) 3,126×3= c) 4,132×6=

    b) 4,812×2= d) 1,502×5=

    6 Ronisworkingout7,423×0

    DoyouagreewithRon?

    DidRonhavetouseacolumnmethod?Isthereaquickerway?

    The answer is 7,423

    7 4 2 3

    × 0

    7 4 2 3

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