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
30 − 10 = ______
3 × 10 = ______
69 + 20 = ______
52 + 20 = ______
38 + 20 = ______
40 + 10 = ______
6 × 10 = ______
9 × 10 = ______
14 + 20 = ______
77 − 10 = ______
98 − 10 = ______
12 + 10 = ______
85 − 10 = ______
4 × 10 = ______
74 + 10 = ______
68 − 10 = ______
55 − 10 = ______
78 + 10 = ______
36 − 10 = ______
78 + 20 = ______
