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
1 × 10 = ______
4 × 10 = ______
45 − 10 = ______
27 + 20 = ______
70 − 10 = ______
9 × 10 = ______
91 − 10 = ______
55 + 20 = ______
72 + 10 = ______
79 − 10 = ______
75 + 20 = ______
8 × 10 = ______
23 + 20 = ______
57 + 20 = ______
16 + 20 = ______
7 × 10 = ______
86 + 20 = ______
63 − 10 = ______
87 + 20 = ______
43 − 10 = ______
