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
27 − 10 = ______
29 + 10 = ______
84 + 10 = ______
85 − 10 = ______
4 × 10 = ______
44 − 10 = ______
39 + 20 = ______
15 + 10 = ______
87 − 10 = ______
79 − 10 = ______
38 + 20 = ______
80 + 10 = ______
6 × 10 = ______
61 − 10 = ______
26 − 10 = ______
86 − 10 = ______
74 + 20 = ______
8 × 10 = ______
7 × 10 = ______
65 + 10 = ______
