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 = ______
78 − 10 = ______
1 × 10 = ______
25 − 10 = ______
3 × 10 = ______
58 − 10 = ______
56 + 20 = ______
18 + 10 = ______
76 + 10 = ______
42 − 10 = ______
50 − 10 = ______
43 + 10 = ______
55 + 20 = ______
67 + 20 = ______
34 + 20 = ______
27 + 10 = ______
86 + 20 = ______
45 + 10 = ______
57 − 10 = ______
37 + 20 = ______
