Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
77 + 10 = ______
65 − 10 = ______
13 + 10 = ______
57 + 10 = ______
82 + 10 = ______
56 − 10 = ______
51 + 20 = ______
77 − 10 = ______
77 + 20 = ______
9 × 10 = ______
66 − 10 = ______
40 + 20 = ______
21 + 10 = ______
76 − 10 = ______
90 − 10 = ______
57 + 20 = ______
86 + 10 = ______
93 − 10 = ______
85 + 20 = ______
25 + 10 = ______
