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
88 + 20 = ______
1 × 10 = ______
60 + 10 = ______
98 − 10 = ______
27 − 10 = ______
21 + 10 = ______
87 + 20 = ______
85 + 10 = ______
92 − 10 = ______
74 + 20 = ______
69 + 10 = ______
50 + 10 = ______
6 × 10 = ______
15 + 20 = ______
13 + 20 = ______
8 × 10 = ______
97 − 10 = ______
30 + 20 = ______
86 + 20 = ______
81 − 10 = ______
