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
72 + 20 = ______
60 + 10 = ______
21 + 10 = ______
46 + 20 = ______
7 × 10 = ______
1 × 10 = ______
60 − 10 = ______
67 − 10 = ______
67 + 10 = ______
77 − 10 = ______
51 + 20 = ______
40 + 10 = ______
62 + 10 = ______
86 − 10 = ______
89 + 20 = ______
79 − 10 = ______
25 − 10 = ______
3 × 10 = ______
88 − 10 = ______
17 + 10 = ______
