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
35 + 20 = ______
38 − 10 = ______
71 − 10 = ______
72 + 20 = ______
32 + 20 = ______
66 − 10 = ______
69 + 10 = ______
42 − 10 = ______
45 + 10 = ______
41 + 20 = ______
47 + 10 = ______
43 − 10 = ______
54 + 10 = ______
83 − 10 = ______
95 − 10 = ______
38 + 10 = ______
2 × 10 = ______
7 × 10 = ______
44 + 10 = ______
39 − 10 = ______
