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
5 × 10 = ______
13 + 10 = ______
57 + 10 = ______
87 + 20 = ______
1 × 10 = ______
85 + 20 = ______
52 − 10 = ______
46 − 10 = ______
30 + 20 = ______
27 + 10 = ______
79 + 20 = ______
92 − 10 = ______
78 + 20 = ______
22 − 10 = ______
61 + 20 = ______
99 − 10 = ______
45 + 20 = ______
63 + 20 = ______
9 × 10 = ______
27 + 20 = ______
