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
7 × 10 = ______
58 + 10 = ______
87 + 20 = ______
55 − 10 = ______
20 + 10 = ______
63 − 10 = ______
93 − 10 = ______
43 + 20 = ______
86 + 20 = ______
4 × 10 = ______
27 − 10 = ______
85 + 10 = ______
61 + 10 = ______
9 × 10 = ______
56 + 20 = ______
58 + 20 = ______
91 − 10 = ______
11 + 10 = ______
45 − 10 = ______
18 + 20 = ______
