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Ten More Ten Less

Niveaux : 1st Grade, 2nd Grade

Matières : Math

Normes : The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens (and 0 ones). (1.NBT.2.c.), Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used. (1.NBT.5.)

Instructions pour les élèves

add to begin Look at each number frame. move drag a clip to the number that completes the number frame. check to turn in your work *** draft if you need more time to finish

Notes pour l'enseignant (non visibles par les élèves)

Have the students look at the number chart and find the missing number. Students will decide whether they need ten more, ten less, one more, or one less to complete the chart. They will slide a clothes pin onto the missing number that will complete the chart. The last two slides are 3 digit numbers and can be used as challenge slides.

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Ten More Ten Less