Froggy Jumps CALCULO MENTALOnline version Calcula mentalmente by Ruth Valcárcel López 1 ¿Cuánto es 8x9? a 72 b 82 c 76 2 Resultado de 40:20= a 4 b 2 c 6 3 Suma 123+48 a 161 b 157 c 171 4 Suma 120 + 38 = a 148 b 158 c 168 5 Multiplica 15 x 6 = a 89 b 80 c 90 6 resta 120 - 40 = a 80 b 70 c 60 7 Calcula 12x 4 = a 38 b 36 c 48 8 7x8 = a 42 b 56 c 34 9 540+135 = a 675 b 657 c 685 10 14x8 = a 112 b 121 c 122 11 6x7 a 46 b 52 c 42 12 8x8 = a 67 b 46 c 64 13 suma 345+ 120 = a 465 b 345 c 365 14 resta 372- 120 = a 345 b 123 c 252 15 6x6 = a 52 b 36 c 42
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