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
2 × 10 = ______
85 − 10 = ______
99 − 10 = ______
93 − 10 = ______
20 + 20 = ______
44 + 10 = ______
6 × 10 = ______
51 + 10 = ______
49 − 10 = ______
1 × 10 = ______
61 + 20 = ______
9 × 10 = ______
26 + 10 = ______
51 − 10 = ______
34 + 10 = ______
26 − 10 = ______
42 + 20 = ______
8 × 10 = ______
78 + 10 = ______
92 − 10 = ______
