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
48 − 10 = ______
99 − 10 = ______
62 − 10 = ______
18 + 10 = ______
9 × 10 = ______
85 + 10 = ______
30 + 20 = ______
6 × 10 = ______
97 − 10 = ______
54 − 10 = ______
51 + 20 = ______
2 × 10 = ______
28 + 10 = ______
64 + 20 = ______
32 + 20 = ______
64 − 10 = ______
81 + 20 = ______
23 − 10 = ______
85 + 20 = ______
38 + 20 = ______
